Crates

Not sure how your Goodwill stores are down there, but up in Oregon I've picked up something like 10 or 12 of them for $0.99 each at our local Goodwill stores.

Now I just store fishing gear, firewood, and my LP tank in some of them while using the trailer to haul my yaks to and from the various campgrounds.

is there a specific name or part number for the Plano box?

Mikeinfresno, I believe the plano 1612 is what I have for my T13.  West marine has some in fresno.