http://www.amasci.com/~billb/cgi-bin/instr/instr.html
“ATTENTION ALL GROWNUPS. Your “inner child” has long been waiting for a chance to usurp control of your body and force it to perform certain actions. The time is now at hand. Read and follow the instructions below. Do this now.”
Just one example, but the page is filled with ideas and experiments: “Neutralization
At a large company party there are helium balloons as decorations. There are also vegetable horsdoeuvres. Tie a carrot or celery stick to a balloon. It must sink rapidly. Eat down the carrot slowly, while testing the buoyancy. When the balloon hovers or sink/rises very very slowly, you’re done. Repeat with more balloons. Soon the room is filled with annoying density-neutral objects drifting around. They lose some helium and sink after many minutes, so bite each carrot to restore full nuisance value.”
Dayseyes 