Sticky Note Glider
This is a fun one. It's a 3x5 note made into a sort of hovercraft glider. Previously, I had been blowing underneath the glider, thinking that would push it across the table. I finally discovered that you should blow into the curved part at the front. This is your classic rear-wheel drive scenario. If the power comes from the back, there is a tendancy to for the rear to get ahead of the front. If the power comes from the front, it will pull the rear along with it. It's all physics that I barely understand.