[CMB]

I have used excercise balls and my hamsters were eager to climb in and often didn't want to come out. I have not had any injuries caused to my hamsters by using a ball.

I have also created play pens and my hamsters liked them to.

I have also free roamed in the hall, which they liked but also they liked to climb the stairs and then play on the landing (area outside the bedrooms). They would sit by my bedroom door when they had finished playing/exploring. I would pick them up and put them back into there cage/tank.

Wth all three my hamsters are supervised to minimise and accidents.