Cut a 2 litre plastic bottle roughly 3/4 (usually a bit more) off and fill it with water, and remember its the top part swiy want to cut off.
Get a glass bottle (swiy can use plastic for the pull part but glass is better) and put a large nail in the glass bottle (people call the large nail a "breaker") swiy need to use this to smash the bottom of the glass bottle off cleany swiy just hold the bottle so your thumb is covering the empty hole were the lid used to be and swiy do it in a stabbing motion so the nail hits the bottom of the glass bottle, it may take swiy a few attempts and dosent always come off cleanly but its usually good enough to work. If swiy cover it with a plastic bag it makes less noise as well.
now swiy put the glass bottle with the bottom part missing inside the plastic bottle filled with water with the top part cut off and swiy almost ready. Swiy can cover the top part of the glass bottle (were the lid used to be) with thin tin foil and poke holes in it but if swiy wanting it to be good get a socket set and put the socket that fits perfectly over the glass bottle and put a gauzze/pipe screen inside the socket.
With a bucket even the most shitty soap bar can get people stoned out their minds. If swiy really wantin to get fucked up fill the socket all the way up then pack it down wether it be solid or green and repeat till you cant pack it down any more. Use your lighter to burn the contents and pull the glass bottle up out the water slowly making sure you burn all the contents till its charcoal and take it. Its like smoking 7 joints in one hit, of course that depends on how much you fill the socket.
If you want to experiment you can crush an ecstacy tablet up and smoke that, though were im from your seen as a junkie if you do this but i know people that do it and its supposed to be good you dont need to wait an hour to feel the tab kick in.
Oh and dont forget to scrap the oils out the gauzze every now and again they get swiy stoned too