I use a large (1' diameter) plastic water tray that you would put under a flower pot in the center of it is a small water fall that you find on display with bonzai trees on the top there is a marble ball that the pressure spins. On the bottom of the cage is reptile bark which here and there I keep a bit of sphagnum moss. I have a large upright abot 3 " in diameter stick with tillandsias (air plants) attached that I mist as well.
I do all this because the cage set up is made of a plastic piping for the frame with a sort of netting that fits over it that opens and closes by a zipper.
Except for the males first shed where a couple of the new scales stuck to the old and got peeled off as well

(OUCH!) everyone has shed in one piece beautifully.