Step 2: What.
1- two or three liter soda bottle.
4- equal lengths of string.
1- hook to hang it from.
1- piece of plastic wrap. (used to cover the opening at the bottom of the planter)
A metal tool such as a pliers or locking pliers.
A scissors, dremel or other cutting tool.
A vine variety plant. Tomato, bean etc.
A heat gun. I purchased mine a while back at Harbor Freight for $10. It also works great for thawing pipes.
So without further rambling here we go.
Arrange your parts and supplies on a level surface in an area where you will be able to hang the planter from to fill it with soil. (Basements are a great place.)