I collect nonsports, mostly illustrated sets from the 70s and earlier, and inserts and promos from the 90s on. I opportunistically pick up stuff from card shows more than I actively set-collect.
I love digging in boxes looking for rare stuff and getting it out to people who'd appreciate it. Most of it now goes to COMC but I'm going to try to get it to TCDB members too, in exchange for... better nonsports stuff hopefully, or cash to buy more stuff.