For gizmos with crazy ideas no one can beat the Japanese. The Mushi catcher from Century Japan is an example. The mushy catcher helps you to catch small flies found on the walls. By using the catcher no marks are left on the wall and is child safe as no power, chemicals are used. The effective range is 1-3 cm from the fly. Using suction technology the fly gets inside the tube. Presto! No dirty hands, marks left on the wall. Only problem is what to do if the fly flies off. It seems the catcher is for dead flies found in hotels, guest houses near the wall clock, light etc.
Made of ABS plastic the Mushi catcher from Century measures 617mm x123mm, weighs 310g and is available in Japan for approximately 2,980 Yen ($25).