For my brother and his lady, I made personalized mugs. I picked these up at Goodwill:
Then I followed the tutorial at Design Mom (found via SouleMama).
When I went to get the Pebeo pens, they were out of the fine tip in black, so my lines are a lot thicker than the original tutorial. But I really like how they turned out.
And most importantly, the recipients love them!
These mugs were so easy and fun to make, that now I have grand plans for many, many more next year at Christmas.