Wow. I have a dog exactly like your hamster! The vet even joked I should get a hamster wheel to keep her busy. I have a gazillion things for her to chew on, deer antler, beef bone, rawhide, nylabone, chewtoys, Kong, even brought sticks inside for her. Made toys out of t-shirts and water bottles. But she prefers my couch, windowsills and living room table. She runs and escapes from everything. She's broken a collar, escaped from a harness. She's like Houdini.