Play a clone of Tetris
Tetris has suggested efficacy in attenuating development or severity of trauma and it seems to have a beneficial ongoing cognitive effect also.
Don’t get Tetris™️, get a good paid version that lets you buy it and doesn’t show ads or track you after buying.
It’s a surprisingly decent condenser. And it’s got a headphone jack. Class compliant. I was using it with an older Linux laptop a while back, now with my phone. I’m getting more use out of it than I expected.