[FONT=arial, sans-serif]A compressed air engine GH-1 hovercraft[/FONT]
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[/FONT][FONT=arial, sans-serif]Various toy companies (including SpinMaster's original product, parts of which are shown here) now sell airplanes and other toys that run using an engine powered by compressed air. Pump them up, and they'll roar away with a quick burst of power and then settle back and putter on for a little while. Many toy airplanes are designed so that the wings can be removed - in this case, the entire body of the airplane including the air tank, engine, and propeller can be attached to your hovercraft with velcro.
Using all these airplane toys kind of makes you wonder what happens if you leave the wings on when you attach airplane parts to a model hovercraft ...well, that's for a future section of the webpage!