Hamster ball?

[Turrican]

Hi everyone. I'm struggling a little bit to keep my hamster Kenneth fully entertained in the evenings! He comes out every night for a play session, it used to satisfy him bit recently he's not happy to go back to his cage and wants out all the time! If anybody goes in the room he appears at the cage door begging to come out! It is very cute, but, obviously I can't have him out of his cage all the time. Anyway, I was wondering about getting him a ball so he could maybe roam around when I'm doing stuff in the house. I'd just like to hear opinions on them really. I'm not too sure about them myself but willing to be told otherwise! My last ham had one but we never used it as she didn't like it and just tried to chew her way out. Another ham I had years ago did seem to enjoy running around in one but I always felt like I just wasn't sure if she really liked it or was simply running in it to try and find an escape if you see what I mean. Thanks in advance for your opinions!