I like to sample perfumes, so I always have a ton of little sample sprayers around... so I am always wearing *something* interesting, even if I'm working from home and not seeing any people. I like the smells too!
I just started meditating. 10 minutes at lunch is SO hugely helpful to me, it's crazy. It just... feels like washing my brain. My job has been really stressful lately, and I'm sorting of hating everything - but I always feel better after 10 minutes (well, I'm increasing the time, up to 12.5 now!) at lunch time.
Those are my two biggies. I guess having good food ready to go for lunch feels like self-care to me. It's a pain to do meal prep every weekend (blah!) but it's nice to have stuff made for lunch so I don't have to really think or do much during the week.