Wasp/mosquito/insect trap

thingiverse

Trap for insects - a clever contraption that's sure to catch those pesky critters off guard. Simply fill the container halfway with a sweet, syrupy liquid that's irresistible to insects. But if you're not entirely confident in your trap's ability to keep its contents locked in tight, don't worry - just pop a plastic cup inside and rest easy knowing your trap is sealed up tight like a lid on a jar.