You'll need a plastic bottle (I used 1 liter bottles), a sharp knife, scissors, and some kitchen scraps.
I used 1 liter bottles for this experiment because they were planted in a narrow garden space along my deck. You can use any size bottle using this same method. You could use plant pots since the holes are already in the bottom, but I like the idea of a "cover" that has a small opening for rain water to get in but keeps critters out. So far, no critters have bothered these.
Take the plastic wrap off and throw out the cap.
I drew a line on the bottle so you could see how far down the neck I make the cut to take the top off, which inverted becomes the lid.
Next I make 3 or 4 holes about 1-1/2 inches from the bottom for worms to enter.
Then I invert the lid like so:
And there you have it!
Then fill'er up!
And plant in the center of some veggies or herbs!
Refill as the kitchen scraps disappear!