Buy stuff! If there are any images that I've posted that you want on some item, let me know. My current inventory is really small. But I intend to keep expanding it as I get more neet things made, and maybe someday I'll even upgrade to a premium shop, where I can sell multiple kinds of mugs, etc.
And I'm not taking a big markup on anything in the shop ($1.00), so you're really only paying for the item.