My daughter shared her house with her cousin and her husband for a very short time. It became a nightmare. They were pigs. Dried up dishes in the sink, pots and pans that sat around for days half full of food.
When they left, it wasn't on good terms, as you could imagine. Their room was just like the sink. Food crumbs and such embedded in the new carpet.
So, even family is not a good idea.
As someone suggested, get a hobby and sell stuff for extra cash. There are many venues where you can do that. You can sell at flea markets, fairs, online, etc.
Make birdhouses, feeders, whirligigs or other yard decorations.
I'm almost done with my first whirligig. I started with a pretty complicated one. If it turns out nice, I may keep making them, but mostly for gifts.
My friend is a retired plumber and he makes all kinds of yard decorations out of copper tubing and copper wire. He hammers them out to look like all kinds of things like owls, birds, etc. They look professionally done. He sells them at art auctions. They are definitely works of art.
We have accumulated tons of stuff we no longer use or need. Some of that stuff can be valuable and we need to get rid of it.