I used to be a zookeeper, so I understand about wanting a natural environment and wanting natural enrichment, but I can tell you that if you get a glider, the limits on toys and enrichment are very high if you chose to use only natural looking items. Even with our snow leopards and wolverine and the like, we used boxes and boomer balls and bowling pins along with natural type materials (logs, scents, rocks, food, ect.). Some of the best toys for an intelligent creature like a glider (which need enrichment daily if possible) with very nimble little paws are: baby toys/fisher price, wodent wheel, small wiffle balls, barrel of monkey, plastic rings, and bird toys. Even if you have a natural type of environment (fake plants and the like), you will still need fleece pouches and perhaps a rope or two as well. Yes the toys may not be appealing to look at-but they sure are a lot of fun to watch them play with!