She got two ~10 packs of different ones actually! Part because she wanted to figure out which she liked best, and part because she knew she'd lose them. At least half have vanished over the last 3 months - but her favourite spinner has been on daily for at least a month. I think its from this pack: https://www.amazon.ca/BikBok-Unisex-Stainless-Anxiety-Spinner/dp/B09KRJZFFB/
(I'm really glad she got a bunch of cheapies to just address the problem, instead of spending a lot of stress looking into one that was fancier but would get lost (and stress her out). Sometimes its so so worth it just to take the easy road and that's something we've been trying to encourage each other to do to accommodate our ADHD)