I bought this variety pack of fidget/stim toys, and I'm in love with a few of them. In fact, I have three favorites that I literally carry with me everywhere now (even to bed).

In particular, the "Squeezer Grip Ring" (middle row, third from the left in the inventory picture) is the most effective stim toy I've ever had. It's so satisfying, I could be on the verge of a meltdown and become fascinated with it and completely settle down.

Hope this helps!