Mocha is in the Ferret Kit 100/ Mamble in the UK. He is not a climber but he does adore Ovo tubes. So, I wired the tubes around his cage. This deters him from climbing too high if her were to. The tubes would be in his way. If I start to see him scaling the bars I’ll put in hammocks. I did have hammocks in the last cage he was in but he doesn’t care for them. So far this set up makes him quite happy. And me too!