Lost your rolling papers, and the cops confiscated your bong? Take a nice sized glass/ceramic (not plastic) soup bowl. Put ice cubes in it, but not over the rim. Take a sheet of aluminum foil big enough to cover the top and around the sides. A large rubber band to hold the foil taut will help. On one side of the bowl near the edge, maybe a quarter to half inch in, take a pin and poke a bunch of tiny holes to make the "screen", that is what you put your stash on. Do that side first, as if you make a hole too big, you can always use that as the toking side, and try again on the other side to make the "screen". Once you make the "screen", make a single little larger hole 180 degrees around the bowl toward the edge, again maybe a quarter to half inch in, where you will toke from. Light 'er up and enjoy! You will need to make a new aluminum foil thingy next time, as it's fragile, and pretty much toasted once you empty the melted ice out. If you don't wash the bowl after each use, you will get a nice residue of resin around the inside rim you can scrape off and smoke.
Guy 1: Oh man, I got some killer weeed, but nothing to smoke it in! Anyone got a bong or some papers?
Guy 2: Like no man, and I'm itchin' to get a bitchin' buzz.
Guy 3: Hey I got an idea - some dude posted on Urban Dictionary how to make a killer bong with just normal household items you will find in anybody's kitchen! He calls it an "ice bowl"!
Guys 1 and 2: Groovy!