Here is the playground I made for my hamster, Chicken. She has since passed away so I named it the Chicken Memorial Playground. My two current hamsters really enjoy it too. Their names are Porkchop and Dumptruck.
Tiny Hamster in a Tiny Playground
https://youtu.be/fu7D0KKmZGM
Two Tiny Hamsters in a Tiny Playground
https://youtu.be/yESL-NeAkBk
Sorry, I couldn't figure out how to get the videos to play inline with the forum.