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.
All sorts but less so now I use a hardened ROM apposed to a rootable ROM. I mostly use it for media consumption, like spotube, invidious.