Combine your love of good grammar with good coffee the easy way with AN AWESOME COFFEE MUG.
Oh, and if you haven't yet read "Eats, Shoots & Leaves: The Zero Tolerance Approach to Punctuation," by Lynne Truss, all I can ask is "What are you waiting for?!"
AND, I just noticed that the guys who make my mugs and totes and skins (oh my) are having a 1492 sale. Weird that they don't tell me ahead of time so I can tell you (ahead of time) but they don't. Apparently, since Columbus sailed the ocean blue in 1492, they'll discount any purchases by 14.92 percent. So if you were considering a purchase, this might be the final push you needed to see.