Martial arts really help me. That and deep breathing.

I'd suggest guided meditations or even yoga. These really help me ground myself when my brain is overthinking and stressing me out. There's a lot of them on YouTube, some only 5 minutes, others longer depending on what works for you. You can even search "5 minute guided meditation(or beginner yoga) for anxiety" I also really like 8D music with headphones. It helps redirect my thinking!

Playing piano and singing helps me also if your in a store and your anxious or out and about find a safe item to feel until u leave it helps me a lot

I walk till the voices quiet down

Some things that help me are deep breathing exercises and guided mediation. Doing creative things like drawing, singing, or writing often helps as well. And listening to music too. When I'm most anxious I prefer soft piano music, but that can be different for everyone. Sometimes revisiting a movie/show/book that I love is good too. I like to focus on things that feel familiar and predictable and safe, if that makes sense. I also try to identify what's causing the anxiety and why and then use reason to "argue" against it. To be honest this one does the least to alleviate the anxiety in the moment but it does help to reframe your thoughts if you're able. Like, it doesn't make the anxiety go away but it can make things feel less overwhelming. Some of those things I listed obviously require more time than others though and none of them work in every situation for every person, but I hope it gives you some ideas?

Beginner yoga, helps me. It gets you lightly stretching, gives you something to focus on, and normally they have guided breathing with it.

I loveee coloring! It helps me relax or drawing I found I actually draw sum badass shi when I’m on the verge of a panic attack lol, video games, meditation or guided meditations can help,, ik it’s hard to do other things, I can’t help but jus sit there nd do nun sumtimes nd then I go into a panic attack but doin sum else does help

For me I crochet. It helps me focus and come back to earth. And focusing on the pattern or even just counting and making sure I don’t miss a loop or mess up the yarn. Focusing on it helps me not to focus on how much I can’t breath while having an anxiety/panic attack