Build your own paper rocket
This is a cool little project that requires only a piece of paper and some glue. The rocket is propelled by air being forced in a paper cylinder by an accordion type pump that is also made out of paper. You make it by simply printing out the template, downloadable in the form of a PDF, cut out the shapes, and start building. Your fellow co-workers will be dazzled when this tiny rocket takes off from mission control, also know as your desk. Just make sure the boss isn't watching.
>> http://www.groeg.de/puzzles/rocket.html