Easy Shamrock Irish Coffee Mug

Do you need a good Irish Coffee Cup? 
Buy some white cups or glass mugs. We picked both up at Walmart.
Use an oil-based paint Sharpie markers. Regular Sharpie WILL come off even after baking. 
 Let the mug dry for a few hours before placing it into the oven.  Bake the mug in the oven for 30 minutes at 350°F. Remember to place the mug in the oven before it heats up and leave it in until the oven cools completely so there won't be any cracks. Remember to Hand-wash the mug gently instead of throwing it in the dishwasher.

Oil-based paint Sharpie markers - http://amzn.to/2G30u36​