Window holder
thingiverse
I'm having a pet peeve with my windows; they're either flapping open, creating an easy exit for my cats, and producing a racket when slammed shut by strong winds, or they're completely sealed, which is a real problem during hot summer months. So I've designed an adapter for those windows, allowing them to be partially opened. This way the cats won't make a break for it out of the window, and the room will get fresh air from outside :). I printed it with PLA, using 0.15mm layer height and a 0.4mm nozzle diameter on my custom printer. I went with 100% infill since the part needs to be super sturdy. It probably won't be of much use to you, but maybe it will spark some creativity for you to come up with your own solution. Made possible by the fantastic FreeCAD.
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