Cresteds and gargoyles are good and tolerate handling pretty well (though babies tend to be jumpy and they all require getting used to handling). They'll also do well in a cage of that size if upended, though 1.2 might be a little bit of a squeeze for gargoyles. Chameleons tend to be less tolerant of handling from what I understand, though I haven't owned one.

I have 5 crested geckos, and currently 1.1 are in a hardware cloth enclosure a little bigger than that, and I find the humidity evaporates a little faster than I'd like because of the air flow. Because of that, I'm going to turn that cage over to my daughter's rat and build a new cage for the cresteds that will have solid sides. If you look in the rhacodactylus section, you'll see a link I posted yesterday for a great new crested cage with solid but see-through sides that you might want to consider instead if you go with cresteds or gargoyles.