Reddit reviews 6 Pairs - Large 2 1/2" Rattle Snake Egg Singing Magnets
We found 1 Reddit comments about 6 Pairs - Large 2 1/2" Rattle Snake Egg Singing Magnets. Here are the top ones, ranked by their Reddit score.
2 1/2' inch sizeFun Larger louder SizeInfividually packaged pairsGreat trick itemLots of fun
That's an honorable thing you're doing but a spinner might not work if he doesn't have much dexterity. I'd suggest trying an inexpensive plastic one to see if it works for him and because he might drop it.
I have always liked magnets as really simple fidgets. I've used these for years. I know it's silly to buy 6 but you want the larger size (2.5") and this is what I could find on Amazon.
https://www.amazon.com/Pairs-Large-Rattle-Singing-Magnets/dp/B0046XOF5S/ref=pd_sbs_21_26
The magnets might be better for someone with large hands and limited dexterity.