So, my fiancee got me addicted to Magic:The Gathering, a fun card game. And there are land cards you can tap for mana to play, and its game-legal to decorate them as long as you leave what type of land it is (for example, this one is a Mountain, which taps for red mana.) visible, and the decoration cant be felt through a cardsleeve (so it doesnt stand out in your deck and make cheating possible).

The owner of the cardshop we visit loved my painted lands, and put a few on display in her shop. When someone makes a request, she asks me if I can paint it, and if I can I do and she keeps a dollar or two out of the profit for 'pimping' me XD This was a request for Vegeta from Dragon Ball Z, painted with acrylics and touched up with a black sharpie.