Yeah, that's a really good idea! I wanted to add some fun things for them without spending alot so putting a plant hanger would be perfect!twitch said:i wouldn't add anymore solid levels but there is lots of space for some nice hammocks instead. if you added more levels there would be less room for tha hammocks if any room at all. you could also add dangling things as it is now such as a hanging flower pot or a cube hammock from the top. or a bait bag, which seems to be a favorite with my rats. disposable, cheap and fun for the ratties and fun to watch.