Donald, there are some gargantuan (ok, semi-gargantuan) industrial size Danish butter cookie tins out there. I have bummed a couple empties so I didn't have to patronize the politically-incorrect store than sells them :O)
Maybe I'm exaggerating, but I'll guess it's a 2-2.5 gallon cookie cavern, uh, can. I guess that's no big deal, considering there are 55 gallon drums, garbage cans, etc. Nice typical cookie tin id.