Mostly for amazon return labels. I bought a used brother laser printer with an extra cartigdge for like $50, at the time it was a cost I could justify.
I play D&D and print all my character sheets, and make spell cards. Also I print photos that I have taken, to decorate my house or if a friend wants one.
Paper maps of places I hike (multiple pages and copies for friends)
I have also made custom cards (birthdays and the like) in the past.