The project came together in an easy afternoon at the shop, and what's best, I got to use my brad nailer for the first time - bonus!
Inside the containers I planted a black jack fig tree, meyer lemon tree, and an unknown varietal of avocado that I started from seed 6 years ago. All in all, I think they really spruce up my backyard.
Step 1: Source a plastic barrel
I paid $10/barrel and bought two of them, one blue and one white, from a nice guy who was using them as rain barrels, but had just upgraded his system to something larger.