I'm working on a craft project idea for a client, and the work has led me to play around with oil-based Sharpie markers. I've only bought a black fine point, so far; if you buy a whole set, you're halfway to having a great party craft for middle-school-aged kids (and up!). The other half you'll need is a package of "crystal" Chinet plates. (I got a package of 8 plates at my local supermarket for under $4; link is for reference.) The trick to keeping this project food-safe is to only use the marker on the bottom of the plate.
You could freehand a drawing, but I think it's smarter to work out your design on paper first. Create a paper template by using your fingers to rub and crease a sheet of plain copy paper onto the interior circle of the plate. Trace this interior depression with a pencil, then cut out the circle.
Here's what the plate looks like with the paper still taped onto the plate's front.
After the ink dries completely (I waited a few hours, to be extra cautious), you can hand-wash the plate with dish soap, and the ink will stay on! I wouldn't put this in the dishwasher, however; treat it gently, and it should last a long while.
I'm Debbie Way, an artist and writer who enjoys making things.