I have OCD and I notice that if I don't have a fidget toy I pick my skin, bite my nails, and pull out my hair. It doesn't have to be an actual fidget toy, you can quite literally use bracelets or rings to fidget with or make a necklace with a whole bunch of rings on there. It's discrete and gets the job done so you're not picking but also focusing on what you need to do

yep! if you're not bothered by impracticalilty, gloves work wonders, especially nice thin dressy ones rather than the kind to keep your hands warm. i always keep lots of bandaids with me, and my friends know they're allowed to do anything they have to in order to stop me picking, even if it means restraining my hands. it sometimes feels annoying in the moment, but i know that when my friends tell me to stop picking, they're doing it because they care about me

Oh no way I didn't realize those might be related for me. Personally small fidgets like spinny rings work best for me since they are more on the downlow and stuff. Otherwise another option is to tape or use band aids to cover the fingers after they've been picked. Personally for me if I see a loose piece of skin or acne or something I feel the urge to "fix" it, so if I end up peeling skin sometimes I'll put funky band aids on them

This sounds like dermatillomania, a OCD related disorder. I have it so if you want to talk to me feel free and there are also online resources that are for it specifically :)