One of the DIYs I keep seeing on Pinterest that I have been meaning to get around to is the Sharpie mug project. Basically, you draw on a mug with a Sharpie pen and bake the cup in an oven at 350 degrees, for half an hour, to set the design. There are various opinions on whether this method "works" or not. Obviously it won't be as good as firing a glazed design into a cup in a high temp kiln. But how many of us have kilns? I don't---so Sharpies it is!
My experience is this---if you don't put the item in the dishwasher, and you don't apply abrasives to the design (don't rub it with a scrubber sponge, for example) it will last for quite awhile. I first did a few standard mugs---then I realized that vintage tea cups would make a good medium. Especially for a design that says "Fairy Tale", no?
I used black and gold Sharpies and baked the tea cup in an old toaster oven I keep just for crafts. I would recommend NOT drawing in the area that you are going to put your mouth on---in other words, don't decorate the rim. This tea cup already had a classic vintage gold rim.
I noticed recently that Mod Podge has a "dishwasher safe" glaze that can be used on mugs. Perhaps a coating of that over the design would prolong its life. Something to try, eventually.
All in all, a satisfying project that can really be done for pennies, if you get your mugs or tea cups at the thrift store. I bought this particular cup/saucer at the Salvation Army for .99.