I have taken out the rolly, and bought a silent spinner, as the darlings

are asleep they will have a shock when the encounter the new wheel
But only draw back is the other fit snugly to the back and of course this being free standing takes up more room. I know it says you can fix to the bars, but the Spelos has only bars on the doors front and back, and the other reason, hanging head in shame

is I couldn't work out how to fit it to the said bars!
While I was in the petshop, one I hadn't been to before, I bought a circus carousel thingy with holes for them to play in looks good but no room now to put it in!