Dollarama has tons of stuff that you can use. I've bought some of the stuff that you guys have already posted. Another good buy, from Dollarama, are those small critter keepers. I've bought tons of them for insect feeders and transportating/holding (while their enclosures are being cleaned) small herps. I also use all that handy recycleable stuff, boxes, containers, etc., they all make awesome hides, especially for messy animals.