There are several methods you can use to support your plants... You can build a lattice, stake and tie etc. I am going to show a cheap/possibly free way to make a loop and stake support. This works well for tall plants with a stalkier base (in my case, Italian Basil).
In this picture you can see the problem with my Lemon Basil. Note that I was too quick to install my support so you can't see how my other plant (in back right) was folding over itself :/
Second picture: Two weeks of growth
Thrid Picture: Right after planting
Coming Soon: Drain/Fill Level Tube ||| Dealing with Reservoir Light Leakage ||| Perpetual Harvesting (for fruiting plants)
Step 1: Materials and Starting
1. An old metal hanger (like one from a dry cleaner) or some rigid wire (that can be bent/formed).
2. Pliers capable of cutting wire.
To start off - straighten your hanger and cut off one end (the hook or other twisty end).
Step 2: Forming the loop
Next bend two hooks on either end of your loop. The idea is to make a clasp of sorts. We'll open the clasp and put the loop around the base of the plant like a bracelet and then close it before staking it down.
Cut off excess wire.