We only have one "official" perch in Skittles' cage, a hardwood branch. However, we also have one of the wired ropes that attaches at the back of the cage, twists around and then attaches again on top of the cage.
He spends most of the time on the rope; however, he sleeps on the branch behind one of his hanging toys.
He also has a gym on top of the cage, but only goes up there if something cares him.