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.
Chinese space station tracker with iss detector
A remote when watching films from my PC with kdeconnect
I once considered using my phone as a VR tracking point for full body tracking with slimeVR