Stumbled upon these at Target yesterday afternoon. Just about the right size to store 6 spools in plus 2 canisters of desiccant (the spools go on diagonal sides, and the remaining 2 diagonals are the perfect size for a tub of damp-rid).
I don't believe that it's 100% air-tight, but it's definitely resistant to air-exchange and much much easier to open than a bucket lid. I plan to put a flat board on top, and I think that will make the flexible plastic lid sit just right to seal 100%.