I incubate eggs in plastic box full of moist sphagnum moss.
Raise neonates in a plastic box full of moist sphagnum moss.
Adults in a cage with lots of moist sphagnum moss.
I buy sphagnum by the cubic yard to resolve possible dehydration issues. It helps immensely in maintaining their internal "water balance".
I had egg-binding problems with my "dry cage and small nest box" several years ago. Never again. I cannot prove that poor hydration caused the egg-binding, but I strongly suspect it. Since I have been using lots of moist sphagnum, binding has not been a problem.