You need pallets, wire (to bind them together), some simple tools, and any extra hardware you would like to add for ease of use.
Step 1: Getting it together...The lay out.
We don't have a slanted base in this design. Simple is easier. We're going with 3 sides and a door.
Choose your lay out. I don't need a huge bin, so I opted to stand the sides up to narrow the bins depth. Plus, it gives me a 2x4 side to attach my hinges to.