This cat toy rolls, spins, and wobbles about quite easily on hard floors, and when printed in PETG, it's incredibly strong and flexible. It holds a couple tablespoons of dry kibble or a few treats inside, requiring either some paw-based retrieval or rather rough play to remove, but it seems to really trip cats up a bit, giving them a mental exercise to get a snack.
All 6 of my cats enjoy playing with this toy. If you're not convinced, that's fine, but please don't leave a speculative negative review simply because it doesn't look like a cat toy.
The 3MF file provided should have everything you need, but if you want to use this with another slicer, just be sure to enable vase mode and you should be good to go. I like printing it with an oversize 0.6mm nozzle with big ol' 0.4mm layers, which gets it printed in just over an hour and results in a very strong print.
I prefer PETG, but this would work fine in PLA, it just won't be as flexible. In PETG you can really squish and squeeze it and it springs back, but PLA can be more brittle, resulting in permanent deformation or delimitation of the layers under this kind of abuse.
The author marked this model as their own original creation.