all you need is a (preferably) clear lightbulb 60 watts or more, the top of a waterbottle cap, something to cut holes with. You dont need straws if you dont have any. And if you really cant get a clear lightbulb just soak it and wash it out very throughly until all the "frostedness" comes out. Then wash it like 10 more times because you really wouldnt want to be inhaling any of that stuff.
the site with pictures for making it is down but here is another link:
http://www.ardpark.org/MMJDebate/bulb_vaporizer.htm