Homemade Airhorn

 This nifty little homemade, probably free (to make) airhorn is pretty cool, and can be crafted on the fly. Admiring the ingenuity is a start, but making one for yourself is where it's at. Good for basketball games, graduations, (alternative) weddings, and other applause-heavy scenarios, this is an awesome project. Suitable for children (with supervision around the scissors), teenagers and adults alike. Even the elderly can make one for when their hearing goes! Win-win.