Paper airplanes are amongst the cheapest and most entertaining marvels that one can make out of the simplest of materials, paper. They have a long history, seemingly as long as paper itself!
Here are several great paper airplanes!
Paper Airplane Starter Pack
by wat. in Paper Airplanes
Hammerhead Glider II
Hammerhead C-588 [Better Invention]
How to Make the StratoHammerhead Paper Airplane
by OrigamiAirEnforcer in Paper Airplanes
How to Make the Vought F-8 Crusader Paper Airplane