I'm sure you've all hear about the electronic cigarette that only emits pure vapor. They're just called E-Cigarettes.
I was thinking, what if you took out the nicotine in the cartridge and replaced it with weed or, even better, hash? The way these e-cigarettes work, the vapor mixes with the nicotine, and you just inhale that mixture. So I'm wondering if, with some slight modification, one of these could be turned into a small version of a bong. I rarely smoke, but I think this is a nifty idea.