Somersetman said
There are of course dozens of versions covering several decades
Yep -- it's a truly iconic product, they sold tens of millions of them in total. I would have thought any of the models spanning the late eighties to early 90s will be really common on eBay, and should be pretty robust.
There is something really special about the sound a Carousel makes when it switches slides. It's a narrative device in itself -- think of the number of dramas where a horrific plot point or emotional moment is established by a scene with a pause in dialogue, a series of slides and the sound of the carousel clicking forward.
I hope you get a good one and you love it!
Edited by Unfocussed Mike