Ive got a 12x12x18? Suggestions?

Howdy yall! I made a post recently about an 18x18x24, but ive now got a vacant 12x12x18 too. Any options? Open to all species (except tarantulas I think…ive cared for them before for a friend, but im still workin on my comfortability with them. I dont ever wanna get an animal im not comfortable with. In my opinion, if you arent comfy with them, they aint comfy with you!)


Maybe millipedes or scorpions