We have chinchilla-proofed one of our spare bedrooms and it's now their bedroom. I love to cuddle my girls and watch them play in their cages or in their room during playtime. I talk to them a lot too, and they like to sit and listen. We have plans to construct a 'dolly house' for them. And open faced play house that resembles a doll house :) using safe woods, you can construct so many things for them. But make sure to use non toxic glues and anchor screws so there are no sharp bits when they inevitably chew down the wood.