Real plants without a doubt. the idea is to mimic natural surroundings right. supply everything that a chamelon would get in the wild (minus the bad stuff). the last time i checked there are no fake plants out there in the jungle lol. the cons far outway the pros.
Live only. Pothos mostly. Also some very long stemmed grasses. Also branches from a tree I believe chinese elm that can put out leaves even after trimmed if kept moist!
You should be able to if you spray it often enough it works for us, the pothos are amazing! They keep the chams hydrated and gives them a nice little sleeping/hiding area. Plus lots of room for exercise for climbing.