i dont get what the idea is but i have made some pretty pathetic attemts at makin cheap vapos one is the light bulb, another i put a "reverse bowl" on the top of a 2 liter and put weed in the bowl and put the bottle upside down and held a lighter under it the first attepted melted the plastic a little so i added alot more foil and than fer some reason it leaked threw the foil holes another one is a wood burning kit and a bottle that one didnt work tht well either and than i was high once and i left it on all night and it burned a whole threw my school stuff and it smellled