Somepeople put their chams on maybe a smaller ficus or plant and they aim the water at the wall in the shower so the backsplash hits the plants. And from what i understand some chams really like it
a lot of keepers do as Johndoe described above with a warm shower once a week and especially when chams are shedding as they seem to really like it and it helps ease the shed one of the ways to spoil your chameleon and it can be used to help your cham get through it shed easier
Another much more water-friendly version of the shower method is to use a water pump instead filled with warm water. A 2gal pump like this will give me about 20+ minutes of shower time.
Showers are great for chameleons which might be a little dehydrated, shedding, might have something in their eyes, and for chameleons that just like a lot of water every now and then.
Excuse the floors! There's no moving a plant in and out of the bathroom without ending up with dead leaves everywhere.