These make great stand alone gifts, but you could put a cute cocoa mix or a gift card in it just to snazz it up. Make sure that if using paint on ceramics, that you use an enamel. But many of these DIYs below use sharpies and an oven to set the ink.
Click on the pictures to link to the instructions for each project!
And...I had to include this idea...bet you know someone who could appreciate this 'stached "like a boss" mug or these mugs with mustaches set!