Ah, how I love a good fidget toy. Most of mine are fairly discreet, here goes:

• Pflueger Progress No. 1184 Antique Fishing Reel Mechanism (see here)
• Chocolate Cream Cookie Haptic Fidget Toy: https://www.etsy.com/listing/1067460507/chocolate-cream-cookie-haptic-fidget-toy?ref=yr_purchases
• A spinner ring. I got this one but there's plenty of options out there: https://www.etsy.com/listing/1179654857/lgbt-rainbow-flag-spinner-ring-anxiety?ref=yr_purchases
• Yogi fidget toy: https://www.amazon.com/gp/product/B09MPRK6V1/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
• Cube Hand Spinner: https://www.amazon.com/gp/product/B08XLXV9CY/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
• And another fidget cube, though this is actually one of my least favorite, though that's no reflection on the actual product. There's only one side of the cube that really speaks to me (the one that looks like a PlayStation joystick: https://www.amazon.com/gp/product/B07KK8QLSQ/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=
• Play-Doh
• Though its not really in the toy category I also have various weighted items (vest, sweater, plush, etc)

Happy fidgetting/stimming!