Sunday I spend with the family.
It wasn't intentional but having Saturday to myself til the evening meal is awesome for unwinding from a busy work week, everyone needs (or at least should try) genuine unplugged alone time (particularly so for natural introverts like me).
Working let me build things, and be creative, I can't manage to stop working. If I don't work I feel like my time is lost
Sundays are usually chore days focused on animals and cleaning (well, we're trying to get better with the cleaning). This is when I do a water change for the fish, go shopping for meat for the cat food (and then prep the food), get any other cat supplies I might need, take the cat/s for a walk or supervise them on the porch, and tidy the house. Once all the pressing chores are done I work on my personal project and watch dumb YouTube videos.