For a humid hide I used a 6w x 12L x 4h container with the lid on and a hole in the side near the top of one side. I used vermiculite and just keep it moist. check it everyday when you are feeding and spray it down and move it around to keep it evenly moist. Your female's will lay there eggs inside the hide and pile all the vermiculite to one end to cover there eggs. Having the humid hide will also keep your gecko's skin looking nice.

Richard