Those who like enjoying their hot coffee while doodling with chalk are probably weird people. Still, they have the Chalk Talk Mug made specially for them. If you'd rather construct LEGOs while enjoying your cup of java, though, the Build-On Brick Mug is exactly the drinking vessel you should get.
Covered with nubs and holes designed to fit standard toy bricks, the mug makes for a completely viable LEGO construction platform. You can build whatever you want directly on the mug (both body and handle), turning it into showcase for your LEGO art or a part of your latest obsessive building project.
The Build-On Brick Mug won't just work with LEGOs, but also with PixelBlocks, Mega Blocks, KRE-O and K'NEX bricks. It's constructed from BPA-free plastic, with the capacity to hold up to 12 ounces of your choice beverage. Since it's not your run-of-the-mill coffee mug, it's a little more precocious: hand-wash only and microwaving isn't recommended.
Want to put wheels on your mug so you can slide it across the pantry table to ask for a refill from the girl sitting on the other side? Not a problem. How about integrating it with a Mindstorms robot that autonomously brings the mug to your lips so you can take a sip every time you push a button? Yep, perfectly possible. Get you fired from work for playing with LEGOs while you take your coffee throughout the day? Definitely can happen.
Thinkgeek has the Build-On Brick Mug available now, priced at $19.99.