Shot of the whole device: Shot of the choke, which is actually the cap of a permanent marker Shot of the bill piece, and the gum I used to keep it airtight. Works perfectly man. The bill piece is just some thick marker I found laying around that I took apart, and all I did was burn a hole into the 2L pop bottle until the plastic was about the right size of the marker and still melty and then stuck it right in. Then I used gum to make it 100% air tight ... And then... Shot of the bowl: I just took a piece of aluminimum foil, pushed it in the tube a bit so it was a nice little bowl, then wrapped the rest of it around the tube and secured it with an elastic band man... And then I poked lots of tiny little holes with a sewing need I found lying around ! And that's pretty much it man, took me 10 minutes to make. Also, I'm considering adding in an ice catcher or something man, making it even awesomer.