I always wipe off my IEMs and AirPods with a towel with rubbing alcohol on it, and make sure sure their respective cases are clean too. And every other week or so I take a lint roller to my Fidelios and Samsons to remove any small dust or fibers. I make sure to dry my hair extra well before putting any over-ears on if I happen to take a shower before going on a listening session. That’s about everything I do to take care of my stuff.
Fidelio X2HRs. Memory foam pads and a springy headband. I can wear them for hours without fatigue.