How to stop a thought spiral?

I was just recently diagnosed with pure-O OCD and I’m working with my therapist to develop a “tool kit” of different strategies I can use to help myself when I’m stuck in a thought spiral. She suggested that more physically methods would likely work for me and I’ve been reading up on some ideas like eating sour candy or holding an ice cube can help ground you a bit and take you out of your head. I was wondering if anyone does anything similar that helps them. I’m just trying to get some general ideas to build my tool kit.