Fly-Goodbye says "hello to my little friend" when it comes to eradicating flying pests. It's kind of like a Super Soaker of doom.
By inserting a fresh barrel filled with a glue-like substance, giving it a few pumps and pulling the trigger, the fly with be sucked into the gun and trapped in a truly sticky situation. It's probably not the most effective method of killing pests (you need to be right on top of the bug for it to work), but it is probably one of the most fun. Fly-Goodbye is expected to ship this May for around $US30. [Fly-Goodbye via Chip Chick via Slippery Brick]