Starting a 10 gal terrarium mostly for the plants right now. Moss Terrarium and just wondering if there's anything that can live comfortably in such a small tank?
What's the area? Depends on the way you are going to plant it. You could most likely have a marbled salamander (Ambystoma opacum) in there. Mine rarely leaves her hide. But it is still nice to be able to provide more hides for it.
Ideally a 10g shouldn't be used as a terrarium.
You'd have a lot more options if you did a water or partial water system as opposed to all land. Several fish, African dwarf frogs, firebelly toads, a few different crabs, snails, etc.
Have you thought about downsizing to a 1.5l tank?
Isopods are cute and eat decaying stuff, so you'll want get some of them. There are a few neat species and color morphs available these days.