Catch a fly. Put it in the freezer compartment of your refrigerator for 5 to 10 minutes. This slows him down considerably, so he's easier to handle. While he's in there, make a miniature paper airplane with a wing-span about double that of the fly. Take the cool dude out of the ice-box and super glue his tiny feet onto the upper surface of the paper airplane. As he warms up and revives, he will begin doing that most natural of all fly activities: he will try to fly. If you have not made your little airplane too heavy, the fly's wing beats will be adequate for lift off. However, carrying the added weight quickly tires the fly, so in mid-air, he will stop beating his wings, and the airplane will soar downward. Seeing his plight causes the fly to once again attempt to fly, with the same result. Little bursts of energy as the plane gains altitude, alternated with slow downward glides. A thread super glued to the plane will keep your aerial circus in the same room, or you can take your new pet fly out for a walk...er, fly.