My husband always has an abundance of empty cable spools. I like finding ways to re-purpose them and I've discovered they really make great wheels! Using old wood we have out back, we
made a simple crate and attached it to the spools.
Of course, it is a stationary cart, you can't roll it around the yard. And we still have to add the handle. Since it's still winter here, I've filled mine with house plants so I can enjoy it till it's time to set in the garden and fill with annuals.