If your pipe is glass, you could always just cut the hole, stick it through the bottle, make it airtight with tape or something, and cut a carb hole. Instant bong, just make sure the bowl isn't too close to the bottle, or else it would probably melt it.

You could also make a waterfall and swish the water around at the end.. or take a jar, stick a bowl through the top with a stem going all the way down and get some small plastic tubing and put that in the top also and inhale through the tubing.. my friend made a piece like that it didn't work half bad.

Or you could just a bong... if you're on a budget just go acrylic w/ carb hole.