There's a few bongs that you can make but the easiest is probably just the basic water bottle bong, all you need is a 600ml bottle a piece of hose and some foil. There's some good info at how to make a bong if you want a step by step guide.
SWIM makes homade bongs by heating up the side of a pop bottle until it starts to melt(you will be able to tell) then before a hole is made stab a pen tube through it to use as your stem then put a foil bowl on the end
Gatorade bottle (or simular)
Metal coil door stopper (take the rubber end off, obviously)
Metal screen (found in sink heads; used for filtration of particulates in the water)
First place the metal screen inside the metal door stopper (at the wide end). Then Poke a hole in the side of the bottle for the slide (metal coil door stopper) & another 4 a carb. Next fill water level to the bottom of the slide & ther ya go
SWIM used to use a "sobe bong"
-razor blade or a knife
First take a screw driver and at the bottom of the bottle there is a indent, hit the screwdriver through there to make a hole. Then rinse the insides with water to get the glass out.Second take the cap and a knife and pop out a plastic lining inside of the cap. Then poke many small holes in the cap enough so you have enough sucktion but so the holes aren't big enough so your "tobacco" doesn' fall through. Finally turn the cap upside down and tape it to the top of the bottle where you drink from. and you now have a dreat gravity bong.
Sorry for the sketchy directions. hope this helps someone in need.
A person HIGHLY recommends not using tape, plastic, copper, or aluminum. Why? HEAT! **INSERT:: Heat will melt plastic making fumes, melt tape and make fumes, heat copper and make fumes, or heat aluminium and make fumes. All those fumes get inhaled into your poor body. Use some fucking common sense.** A person knows of a simple way to make a good bong, or "yotti, dazer, yott, popper" bottle. Simply take a 500ml or similar pop bottle, peal the label. For the 'piece' take a straight glass or metal tube, the diameter of a cigarette, anywhere from 4" long and up, whatever size works.
Use a lighter to melt a clean hole about an inch or two above the bottom of the bottle, and insert tube through hot plastic to make an airtight fit. Next slide the tube out and pack one end with a snip of a cigarette THAN the green, or just green if your lungs can't handle tobacco. than use packing tool to push the mix together tighter from the bottom end.
Insert tube into bottle and brew, wait for the entire yott to cherry and you will feel it want to pull through to the water, simply haul harder for a brief moment and air will rush through into the water making a "popping" noise. Exhale and feel the head rush.
"Spliff/joint Bong" any coke bottle etc, burn a hole in with a cigerette half way up just slightlty smaller than a straw. put a straw through on an angle towards the bottom.
Roll a spliff/joint with a rolled cardboard filter and insert the filter into the straw. add shottie hole if needed, add water and smoke away.
Thus you never have the bullshit of dirty old bong make em as you need em. you can puff puff pass all you want without the need to re-pack light that shit all the time. The beauty of the spliff/joint is you can hit as much as you can handle, you cant ever finish the cone piece....unless you can inhale a whole spliff/joint
1) Take a 2 liter bottle
2)make a hole on the side of the bottom of the bottle to where water can come out like a waterfall.
3)make a decent size hole on the cap to where you can fit something to hold your pot, such as a bit or foil bowl.
4)pack the bowl, set it aside.
5)fill the bottle with water making sure that the hole at the bottom is covered.
6)screw on cap, light bud and let go of the hole.
7)wait till water is gone and get as big of a hit as you want.
FOR FUCK SAKE!!! Why do people use plastic pen peices and aluminium foil? Are you people fucking dumb? Have fun burning that plastic and getting a nice brain-cell killing head-buzz. PLEASE refer to my above post.
SWIM wanted to try salvia and needed to make one for it... got great results with a 5/8" socket, a metal pen body which fit snugly in said socket, a water bottle, and aluminum foil for a screen- he used a lighter to heat the pen body so it'd punch a hole in and fit snugly into the bottle, and it worked pretty well. SWIM tells me the foil tasted awful, but it was what was handy.