Ah I see now. So you have an extra screen cage (How big is the cage?) and misting system and no plan to get a chameleon for the set-up.
Hm. Well, the misting system would still be nice for a gecko, I think, even if not used perhaps as frequently through the day? I dont own a gecko, but a friend has a bunch of different types and he mists them once or twice daily as far as I know. And it would sure be helpful if you take weekend vacations (extended vacations you'd still need a pet sitter to come in a feed).
I enjoy bugs, so I might opt for a collection of Leaf Insects (most of those like to be misted a couple times a day). A screen cage allows for the occassional breeze, which is natural for them. And any eggs that fall and hatch between cleanings would be okay, as the little ones would very likely not fit through the screen.
Many tropical butterflies like hot humid environments.
or, ya, just sell the unneeded equipment.