Pothos are very beautiful I suggest them too. I have some in my enclosure and they're really hardy! Also look at the schefflera (umbrella plant). It's not for the top of the cage but theyre beautiful, and not toxic for chameleons. I have one in my enclosure and it's growing super fast! Maybe you could place oneon the bottom right of the enclosure. Looks really nice by the way! Awesome job!