Our gliders absolutely love them also. I put some leaves down at the bottom of the cage, and they play around in them. I have tried putting a small branch with leaves up on the side of the cage, but they didn't seem interested. But they love to have a leaf or two in their pouch with them. In the middle of the day I can sometimes here them chewing on it and start smelling eucalyptus.
They also love to have the sticks in their cage; sometimes in the pouch to chew or just out of the pouch to shred the bark off.