You could attach another bin if you wanted to add some extra room for her to stretch her little legs, and I'm sure she'd appreciate it! Maybe filling an extra bin with tons of bedding would keep her entertained too if she's a burrower. Lots of old cereal, tissue, and other snack food boxes with holes cut in them and arranged in a maze or a tower could provide cheap fun for her. Another idea would be to get some natural hides like seagrass tunnels, sisal huts, and pine nest boxes for her to hide in and climb on top of. You could also use wooden popsicle sticks glued together to make a custom hut/playground! The DIY section of this forum is filled with some lovely and beautiful ideas on what you can make out of random things laying about your house. Best wishes and happy shopping/making