Rodents' love of chewing can wreak serious havoc on everything in their cages, as we discovered during our first few attempts at wiring up Lizzie's cage. Lately I've been experimenting with a laser cutter to create unique toys for her to chew on and keep things interesting (seriously, you'd be bored too if your universe mostly consisted of a glass tank).
A particularly successful prototype has been to cut out little pieces of cardboard that can be interlinked to form all kinds of different structures. Think K'Nex for hamsters. Also pictured is a more ambitious project to create fun, safe home for Lizzie. All of the pieces are connected using slits and pressure nubs so no glue or any other materials that could potentially have been hazardous were used in anything. Just pure, good old cardboard. ;)
"Mine! Keep off!"
"Yesssssss, from this castle I shall rise to dominate. They will all fall before me. One day, it shall all be mine...but first, nap time."