diff --git a/modular-recipes/repos/minimal_hydroponics_setup/Todo.md b/modular-recipes/repos/minimal_hydroponics_setup/Todo.md
new file mode 100644
index 0000000..9c3a4c0
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+++ b/modular-recipes/repos/minimal_hydroponics_setup/Todo.md
@@ -0,0 +1,6 @@
+I had somewhat randomly picked 1 inch ID as the drain tube.  3/4 inch
+seems much more common, maybe i made a mistake.
+
+add mesh baskets as an input to the plant tray
+
+add rockwool cubes as an input to the plant tray
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/barb_fitting_1_2_inch.toml b/modular-recipes/repos/minimal_hydroponics_setup/barb_fitting_1_2_inch.toml
new file mode 100644
index 0000000..48ab75c
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/barb_fitting_1_2_inch.toml
@@ -0,0 +1,12 @@
+[inputs]
+capital = { quantity = { amount=5.75, unit="USDollar" } }
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.ebay.com/itm/134772441988",
+    "https://www.ebay.com/itm/251050375775?var=554293415440",
+    "https://www.ebay.com/itm/251313018420",
+]
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/barb_fitting_1_inch.toml b/modular-recipes/repos/minimal_hydroponics_setup/barb_fitting_1_inch.toml
new file mode 100644
index 0000000..1a0994c
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/barb_fitting_1_inch.toml
@@ -0,0 +1,10 @@
+[inputs]
+capital = { quantity = { amount=15.19, unit="USDollar" } }
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.botanicare.com/products/fittings/"
+]
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/clay_pebble_grow_medium.toml b/modular-recipes/repos/minimal_hydroponics_setup/clay_pebble_grow_medium.toml
new file mode 100644
index 0000000..1571106
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/clay_pebble_grow_medium.toml
@@ -0,0 +1,13 @@
+[output]
+clay_pebble_grow_medium = { quantity = { amount=10, unit="Liter" } }
+
+[inputs]
+capital = { quantity = { amount=15.19, unit="USDollar" } }
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://hydrobuilder.com/mother-earth-hydroton-10-liter.html"
+]
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/food_safe_5_gallon_bucket.toml b/modular-recipes/repos/minimal_hydroponics_setup/food_safe_5_gallon_bucket.toml
new file mode 100644
index 0000000..ee2b3dd
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/food_safe_5_gallon_bucket.toml
@@ -0,0 +1,11 @@
+[inputs]
+capital = { quantity = { amount=7.00, unit="USDollar" }}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.lowes.com/pd/Leaktite-5-gal-70mil-Food-Safe-White-Bucket/5013212247",
+    "https://www.leaktite.com/products/5-gal-foodsafe-70-mil-white"
+]
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/food_safe_bucket_lid.toml b/modular-recipes/repos/minimal_hydroponics_setup/food_safe_bucket_lid.toml
new file mode 100644
index 0000000..4690bcb
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/food_safe_bucket_lid.toml
@@ -0,0 +1,10 @@
+[inputs]
+capital = { quantity = { amount=5.00, unit="USDollar" }}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.leaktite.com/products/5gld-hdpe-foodsafe-lid-w-gasket",
+]
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/grow_lights.toml b/modular-recipes/repos/minimal_hydroponics_setup/grow_lights.toml
new file mode 100644
index 0000000..e793f91
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/grow_lights.toml
@@ -0,0 +1,10 @@
+[inputs]
+capital = { quantity = { amount=68, unit="USDollar" } }
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://farmhydrosupplies.com/product/agrobrite-fluorescent-t5-grow-light-with-6400k-bulbs/"
+]
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/hose_1_2_inch.toml b/modular-recipes/repos/minimal_hydroponics_setup/hose_1_2_inch.toml
new file mode 100644
index 0000000..735d5f7
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/hose_1_2_inch.toml
@@ -0,0 +1,13 @@
+[outputs]
+hose_1_2_inch = { quantity = { amount=100, unit="Foot" } }
+
+[inputs]
+capital = { quantity = { amount=69.95, unit="USDollar" } }
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.ebay.com/itm/125116790610"
+]
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/hose_1_inch.toml b/modular-recipes/repos/minimal_hydroponics_setup/hose_1_inch.toml
new file mode 100644
index 0000000..b95afb0
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/hose_1_inch.toml
@@ -0,0 +1,13 @@
+[outputs]
+hose_1_inch = { quantity = { amount=100, unit="Foot" } }
+
+[inputs]
+capital = { quantity = { amount=15.19, unit="USDollar" } }
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.botanicare.com/products/fittings/"
+]
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/minimal_hydroponics_setup.toml b/modular-recipes/repos/minimal_hydroponics_setup/minimal_hydroponics_setup.toml
new file mode 100644
index 0000000..9626a2c
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/minimal_hydroponics_setup.toml
@@ -0,0 +1,24 @@
+[inputs]
+nutrient_reservoir = {}
+plant_tray = {}
+nutrient_pump = {}
+grow_lights = {}
+tasmota_power_outlet = { quantity = { amount=2 } }
+hose_1_inch = { quantity = { amount=1, unit="Meter" } }
+hose_1_2_inch = { quantity = { amount=1, unit="Meter" } }
+
+[dependencies]
+operator = { skills=["assembly"] }
+
+[action]
+process = """Position the plant tray above the nutrient reservoir.
+
+Put the pump in the nutrient reservoir.
+
+Use the 1/2 inch tubing to connect the 1/2 inch fitting on the plant
+tray to the pump outlet.
+
+Use the 1 inch tubing to connect the 1 inch fitting on the plant tray
+to the nutrient reservoir.
+
+FIXME: Plant some plants etc??."""
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/nutrient_pump.toml b/modular-recipes/repos/minimal_hydroponics_setup/nutrient_pump.toml
new file mode 100644
index 0000000..a50a760
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/nutrient_pump.toml
@@ -0,0 +1,19 @@
+[outputs.nutrient_pump]
+comments = """Active Aqua 250 GPH, or maybe the 160 is enough?  Or maybe
+the 40?  I like that they publish GPH vs lift height curves, and it
+falls off pretty rapidly for the smaller pumps.
+
+The 160 GPH and 250 GPH both use 1/2 inch tubing, so i'll try one of
+those, easy to switch to the other one if the first one's no good."""
+
+[inputs]
+capital={quantity={amount=17.75, unit="USDollar"}}
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://www.ebay.com/itm/373981715463",
+    "https://hydrobuilder.com/active-aqua-submersible-water-pumps.html",
+]
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/nutrient_reservoir.toml b/modular-recipes/repos/minimal_hydroponics_setup/nutrient_reservoir.toml
new file mode 100644
index 0000000..527eda0
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/nutrient_reservoir.toml
@@ -0,0 +1,15 @@
+[outputs.nutrient_reservoir]
+comment = """The important thing here is that it's food safe (because
+it's going to be touching our food), opaque to visible light (to inhibit
+algae growth), and large enough to hold all the nutrient solution used
+in the system."""
+
+[inputs]
+food_safe_5_gallon_bucket = {}
+nutrient_reservoir_lid = {}
+
+[dependencies]
+operator = { skills=["assembly"] }
+
+[action]
+process = """Put the lid on the bucket, duh."""
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/nutrient_reservoir_lid.toml b/modular-recipes/repos/minimal_hydroponics_setup/nutrient_reservoir_lid.toml
new file mode 100644
index 0000000..4b52191
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/nutrient_reservoir_lid.toml
@@ -0,0 +1,9 @@
+[inputs]
+food_safe_bucket_lid = {}
+
+[dependencies]
+tools = [ "hole saw" ]
+
+[action]
+process = """Drill three holes in the lid the right size to fit the 1
+inch tube, the 1/2 inch tube, and the pump's power cord through."""
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/plant_tray.toml b/modular-recipes/repos/minimal_hydroponics_setup/plant_tray.toml
new file mode 100644
index 0000000..e37f2ba
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/plant_tray.toml
@@ -0,0 +1,18 @@
+[inputs]
+food_safe_5_gallon_bucket = {}
+clay_pebble_grow_medium = { quantity = { amount=5, unit="Liter" } }
+barb_fitting_1_inch = {}
+barb_fitting_1_2_inch = {}
+
+[dependencies]
+tools = [ "hack saw" ]
+
+[action]
+process = """Cut the top of the bucket off, leaving a kind of deep dish
+or bowl that will holds the plant growth medium and the plants.
+
+Drill holes for the two fittings.
+
+Attach the two fittings.
+
+Add the grow medium """
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/return_tube_1_inch_id.toml b/modular-recipes/repos/minimal_hydroponics_setup/return_tube_1_inch_id.toml
new file mode 100644
index 0000000..af6a9b3
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/return_tube_1_inch_id.toml
@@ -0,0 +1,10 @@
+[inputs]
+capital = { quantity = { amount=138, unit="USDollar" } }
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://hydrobuilder.com/active-aqua-black-tubing.html"
+]
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/sonoff_s31.toml b/modular-recipes/repos/minimal_hydroponics_setup/sonoff_s31.toml
new file mode 100644
index 0000000..1bcb15f
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/sonoff_s31.toml
@@ -0,0 +1,15 @@
+[outputs.sonoff_s31]
+comments = """Make sure you get model 'S31', not 'S31 Lite'
+(which lacks power monitoring).  Detailed info on this device here:
+<https://tinkerman.cat/post/sonoff-s31-now-serious>"""
+
+[inputs]
+capital = { quantity = { amount=10.90, unit="USDollar" } }
+
+[dependencies]
+operator = {skills=["vendor interaction"]}
+
+[action.purchase]
+vendor = [
+    "https://itead.cc/product/sonoff-s31/"
+]
diff --git a/modular-recipes/repos/minimal_hydroponics_setup/tasmota_power_outlet.toml b/modular-recipes/repos/minimal_hydroponics_setup/tasmota_power_outlet.toml
new file mode 100644
index 0000000..f2b6491
--- /dev/null
+++ b/modular-recipes/repos/minimal_hydroponics_setup/tasmota_power_outlet.toml
@@ -0,0 +1,10 @@
+[inputs]
+sonoff_s31 = { }
+
+[dependencies]
+operator = {skills=["vendor interaction", "firmware_flashing"]}
+tools = [ "firmware_flasher" ]
+
+[action]
+process = """Flash the Sonoff S31 with Tasmota firmware per the
+instructions here: <https://tasmota.github.io/docs/devices/Sonoff-S31/>"""