You take one of those long filmy bags like the dry cleaner puts around your clean suit. Now stretch it lengthwise and roll it a bit to make it vaguely rope like, then put a knot in it every 6 inches or so. Now you have a sort of rope ladder four or five feet long.
This is best done outdoors with calm winds. Over a campfire is fun. Indoors it is done over a bucket of water. Hang the rope from something. We tied it to a wire coat hanger and hooked that over a tree branch or a light fixture. Light the bottom end on fire. Watch the fun.
AS the plastic slowly burns, little beads of burning plastic drip off the end. As they drop, the flame oscillates in the breeze, making a VWEEEEP sound. Very ray gun. What I just found was not only do a lot of people call them a zilch, but there is even a you tube. Now imagine this with dilution of the pupils and expanded consciousness.
Watch on youtube.com