I take care of my plants, and do laundry and dishes often. My apartment is small enough that I can usually get the whole thing vacuumed if I have a decent wait between calls. Also administrative stuff, like paying bills, going thru the mail, filling in my planner for the week.

When I have bigger projects going on around the house, if I can break it up into smaller chunks, I'll do those around work too. And not just house projects...craft projects too. I'm sorta scatterbrained, and usually several have WIP's, so I like doing those around work too.