Here’s another elaborate bong from Illadelph. This one is aptly named the Quad Coil. Instead of filtering the smoke through water, this ridiculous apparatus filters the smoke through liquid nitrogen (the stuff your high school science teacher used to freeze the banana before shattering it on the floor). You’re gonna have to seriously cut back on you weed budget for a while if you want to purchase this thing. It will cost you anywhere between $6,000 and $10,000.