My husband got the drums from a customer of his. He said he found another kind online the metal Caribbean drums whatever they are called (calypso?)also. I would think just search under electronic finger drums. There is a button to turn them on and as long as they play with them they will stay on. When it sits for a while it turns off. I don't know about leaving the drums in the cages with them. Would not recommend it.We have used it only while we were there..
But Yeah it is dark..Those clips were the best we could get.. when we moved a light to where you can see better they would stop..They don't like any light except little night lights and positioning a light to stay in one spot was hard with them in the cage.