Door Key Saver

This is one of the smallest gadgets I've designed so far, but very useful. This little "mushroom" will keep the key in your door. Just push into key hole and turn 90 degrees.

I provided two different versions, the standard one was fine for me, but depending on your handle plate you might need the slightly longer version

Must be printed with soft filament like TPU

Update (2020-09-28): Just realized at my parents home that some doors require a slightly thicker version to fix the key, so I added another version