Martina from Austria hacked an Ikea 5×5 Expedit into her "dream hamster cage." From Ikea Hacker:
I used a set of white Dioder strip lights for the cage illumination plus a red LED christmas light chain so I can choose between white and red light. Hamsters are red blind so you can watch them under red light without disturbing them.
The interior also contains Ikea products: the 2 houses were hacked from a Fira set and the little food bowls are actually Glimma tea light holders.
"Expedit hamster home" (via fp)