I should really be in bed, but as is often the case that one last link I clicked took me to yet another page of extreme silliness that I just had to mention here.
Working in your shed? Gonna be there all day? Beer getting warm? Then you need to make your next project the JET POWERED BEER COOLER.
Some guy in New Zealand was facing this very conundrum and this is the solution he came up with. While I’m not particularly fond of beer myself, it is an excellent example of elementary physics in action. It’s also another great example of the lengths men will go to to solve a simple problem in as absurd a manner as they can. Why I can think of a dozen applications for this myself, none of which come close to actually needing such a solution.