House sitting for friends and relatives.
Selling outgrown clothes and toys on Mom Swaps
Reselling on eBay. You can find items from yard sales, thrift stores, or online auctions in your area, check Maxsold.com This was my favorite but it can take up a lot of space!= depending on what you choose to resell.
Direct Sales companies....less of a side hustle because it takes a lot of work to make a small amount of money.
Asking relatives if they need help cleaning or taking care of their garden.
Selling your own craft-soaps, candles, greeting cards, etc.