The tank I have was made for reptiles/amphibians, and says not to use it like an aquarium. I could get night crawlers. Do crickets go into hibernation when put into a fridge the way other insects do? If they do then I can do that easily. I had been thinking of getting some night crawlers or meal worms to give him as snacks, so they could go in there too. I know that other students keep worms and things in fridges as fish food. This dorm is also used as a dining hall, but as long as the bugs are knocked out (until they're in with the frog) then there's no problem.