A garbage bin clip to keep the lid ajar. This should prevent build up of moisture and prevent maggots from spreading. This version is made to fit Omrin garbage bins.
This is not an original idea. Check the aptly named Kliko-Cracker for the ‘original’ design.
Print in PETG if the bin is in sunlight for extended amounts of time. I can't ensure the clip will stay put when the bin gets emptied so remove it beforehand to prevent it getting tossed in the garbage truck.
The lid will probably have a tendency to deform after a while. To minimise this I would alternate the position after each time the bin is emptied.
The author remixed this model.