I do not smoke weed, seriously. But I couldn't help but be impressed with a device I ran into at IU (I know the kids who made it). They call it the 420 and I took some pictures of it with my camera phone.
Here she is, the 420.
There's where you put what you want to smoke.
Here's the kicker. The weed is blown through the tube with a computer cooling fan powered by DC power.
Here is the car adapter power source. (from an old cell phone charger)
Thats it. The 420.