Oh, I forgot one.
I've been considering getting a pop up play pen made for dogs:
https://www.amazon.com/Ruff-Ruffus-P...ruffus+playpen
I'm just worried that the mesh portion comes down too low. I feel like the plastic portion would be fine, but my hamster does seem want to try to chew mesh. I would love to hear if anyone has tried this play pen, and how it went.