I have to go with a bucket (gravity bong). Get a 2 litter of coke or something. cut the bottom off, like a inch or so. then get either a bucket, or sometign larger than a 2 litter and fill it up wih coke. Next get a socket. like u know a socket for tools. Next a cap that u screw on for like bottled water. drill or cut a whole threw the cap, and stick the metal socket threw it. Make the whole tight. Next fill the bucket/ or whatever u find and fill it with water. Put the cap on top of th 2 liter. and while ur lighting the bud inside the socket (may need a screan make one) SLOWLY lift up the 2 liter up from the water, once it's totally full from u pulling it up, BOOM. should do u good