Here are some popular side hustles: Freelance work (e.g. writing, graphic design, photography, programming) Selling products online (e.g. on eBay, Amazon, Etsy) Delivery or transportation services (e.g. Uber, Lyft, DoorDash, Instacart) Pet-sitting or dog-walking House-sitting or cleaning services Tutoring or teaching online Renting out a room or space on Airbnb Affiliate marketing Dropshipping or online retail arbitrage Providing technical support or consulting services.