Katja's hamster Fred has a home to die for, for a hamster. Katja converted an Ikea Expedit bookcase into a multi-level hamster home featuring a different room for each activity. Fred has a large room for running, stairs and ladders to traverse, a room to burrow in, a room to take a dust bath in, a room to eat in, variable lighting, and plenty of places in which to explore and play. See more pictures and find out how it was done at Pawesome. Link
Katja's hamster Fred has a home to die for, for a hamster. Katja converted an Ikea Expedit bookcase into a multi-level hamster home featuring a different room for each activity. Fred has a large room for running, stairs and ladders to traverse, a room to burrow in, a room to take a dust bath in, a room to eat in, variable lighting, and plenty of places in which to explore and play. See more pictures and find out how it was done at Pawesome. Link
http://www.allyourhobbies.com/images/spacekit.jpg
Quite frankly, the hamsters probably enjoyed cardboard boxes more, since they always chewed through the plastic to get out and find a cardboard box to shred. I would bet the hamsters could chew through that as well.