You can buy drippers or make your own. Most pet stores that carry reptile supplies will have them. To make your own, just poke a small hole in the bottom of a cup. Poke the hole from inside the cup. With a little experimentation, you will figure out the size cup and hole you need. Let the water slowly drop on leaves near your cham's favorite spots. The problem is how do you collect all that water after it has left the dripper.