4. Spreadshirt: Spreadshirt allows you to create and sell your t-shirt designs. You can set up your own online shop on their platform and earn a percentage of the sales.
7. Zazzle: Zazzle lets you design and customize various products, including t-shirts. You can set up a store, create your designs, and earn royalties on each sale.
Remember that while these sites offer opportunities to earn money through t-shirt design, success depends on the quality of your designs, marketing efforts, and the appeal of your products to potential customers.