I wanted to try making one of the many DIY drum composters posted on the site but was having a hard time finding a food-grade 55 gallon industrial barrel here in Brooklyn, so I substituted a relatively cheap garbage can.
Step 1: Assemble materials
You're going to need a couple of 2x4's, lots of wood screws, two hinges, a padlock assembly, a 3-4 foot piece of rebar or PVC tubing, and lots of very small nuts and bolts. Oh - and a garbage can.
Now everything depends on what size garbage can you select - if you get a really big one, you'll need to cut your wood into larger pieces in order to build a big enough frame to allow your can (once it's been suspended by the rebar or PVC tubing) to swing a full 360 degrees without hitting any part of the frame. So buy your garbage can and then figure out what size wood pieces you'll need in order to build a big enough frame. I bough a 35 gallon can for $14.99 and it probably doesn't make sense to go any smaller than that.
Step 2: Build the frame
I am no carpenter, as you can probably tell, and so I just built a basic frame using 2x4's, wood screws and metal plates to hold everything together. You'll probably need a circular saw and miter tool to cut the pieces.