Graphic designers and digital artists can create a wide variety of unique and valuable products. From logos, to .PSD templates, to icon packs, to PowerPoint themes, to original artworks, designers can apply their skills in numerous ways to create digital products for sale.
Graphic designers can create and sell card designs, patterns, brushes, backgrounds, UI assets and more. Digital artists can sell finished pieces, drawings, and sketches. Finished original art of exceptional quality can be priced higher than graphic design pieces. If you can produce artwork digitally, it’s worth selling online (just be sure to license it correctly!).