Here's a good list of stuff for a 12 I've come up with. Lots of it I have had in one of mine.
Frogs-
Bullfrogs, pacmans, tomatoes, darts, African clawed(fill it up a little with water) lots of toad species
Snakes-
Kenyan sand boas, mountain kingsnakes, smaller milksnakes, shovelnose snakes, rosy boa
Lizards-
Geckos-
Knobtail, banded, panther, velvet, dune, webfoot, clawed, frogeyed
Others-
Whiptails, side blotches, small skink species, curlytails, swift species, small armadillo lizard species, anoles, Pygmy leaf chameleons, fire skink, schneiders skink
Hope that helps! I'll Try to think of more if i can!
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