- A ceramic mug (A cheap one. The better the mug is, the less the marker will stick. A cheap mug's glaze isn't as strongly adhered, making for a better bond with the marker's ink. Mine is from the Dollar Store)
- Oil-based permanent markers (I'm using BIC's Mark It, you can also use Sharpies)
- Your oven!
Design done? Time for baking! Place the mug on a cookie sheet in the oven, BEFORE it's fully heated. Then, heat the oven to 400 degrees. I've seen online that 350 degrees is enough, but it's not. It's not hot enough to get the glaze from the mug and ink to bond fully. Let the mug warm up in the oven while it's preheating and then when it reaches full temperature, let it bake for 30 minutes. As the mug is in the oven, keep an eye on it to make sure it doesn't burn (you'll begin to see it turn brown). After 30 minutes, turn the oven off, but do not take the mug out. Let the mug cool in the oven, as taking it out immediately might cause it to crack.
I recommend hand washing this mug. I've tried using the dishwasher, but every time, the image eventually wears off. A light scrub in the sink should do the cleaning trick.