Cool things to do with a beer can

Look at this!
It's a video that demonstrates how you can pick a Master padlock with a shim made from a beer can. I love little hacks like that. Here's another cool hack that uses three beer cans and a penny to make a acohol burning backpacking stove. This stove is so intriguing to me that I am going to buy the old man a six pack of Heinies tomorrow so I can build one.