In this Instructable, the first in a series using the book How to Fossilize Your Hamster And Other Amazing Experiments for the Armchair Scientist
as inspiration, we use a bar of chocolate to measure the speed of light.
What you'll need:
A bar of chocolate, actually, get three, that way you know you'll actually get to do the experiment! (The longer the bar of chocolate, the better)
A metric ruler
Safety Glasses (not that this is dangerous, it just adds awesome factor to any experiment)