Thank you! Roomba has been doing remarkably well lately, so my hope is that she continues to thrive! Which... is pretty good for a cat I swore was dying just a few weeks ago >>;; I guess I got a little panicky over a little bit of pancreatitis.
alright, so any cat who's suddenly lost interest in their usual activities should be seen by a vet, just to eliminate the possibility of some health problem, etc, etc. We all think of arthritis as an old age thing (and it can be), but it can affect cats of all ages, just like people.
Now that that's out of the way, take a look at the toys you've got on offer. Are they all pretty much the same design? It could be that she's just bored of the same thing and could use some variety. Even if all she likes are wand toys, there are a few variations. Like my cats absolutely lose their shit over worm-ona-string. Da Bird toy is pretty popular among my work cats. The only reason i don't have one at home is because Saia destroys them. Quickly.
The Cat Dancer is VERY traditional. I don't think the design has changed in like 40 years and that's because it doesn't need to. It's perfect.
At work, I'm more likely to use a toy like this one, tbh, because it's easier to direct in a smaller space.
For non-wand toys, plastic springs are beloved. Your cat also might appreciate a tunnel to play in, if you've got the room for one. And keeping a few catnip toys lying around can be a hit too; I recommend this toy banana or this toy carrot. They fall into that ideal 'small enough to carry, but also large enough to kick' range that keeps a lot of cats happy.
I know you didn't ask for toy reccs, but variety may be just the thing your cat needs for a little encouragement.
Good luck and happy new year!