Fruit fly trap

thingiverse

Find an old jar with a plastic lid that fits perfectly in your hand. Drill a 44m hole straight through the center of the lid, using a hole saw to create a precise opening. Next, carefully squeeze the printed part through the hole so it's facing upwards towards the sky. Now, fill the jar with a tantalizing lure like white wine or fruit juice, or try out your own secret recipe. Finally, screw on the lid and hang the jar from a nearby fruit tree using a sturdy cable tie or a length of string.