If you are a digital artist and want to make passive income without spending substantial amount of money, here are the websites you can try.
Redbubble: This is a print provider as well as a marketplace for print on demand products. You will have to upload your design and sell these designs on various products.
Amazon Merch: Just like on Redbubble, you will have to upload your designs and use your design on various products and make money by selling products.
Society6: This is a marketplace for digital artists to see their art works as canvas print or use as a print on various products.
Redbubble: This is a print provider as well as a marketplace for print on demand products. You will have to upload your design and sell these designs on various products.
Amazon Merch: Just like on Redbubble, you will have to upload your designs and use your design on various products and make money by selling products.
Society6: This is a marketplace for digital artists to see their art works as canvas print or use as a print on various products.