Replacements (well actually stunt doubles in my case as I have originals) for a rare centre cap for the wheels on a classic Saab 99 Turbo. I've had the designs up on thingiverse for some time but the caps printed on the bigbox are much better than I have managed on my old printer so I replaced them at the weekend.
Nice! Are you afraid someone will decide they need them more then you, or them falling off down the road?
The originals are so expensive (if you can find them) that it's a risk having them on the car to be honest...plus yes they tend to fall off even if not "helped"....my replacements are super tight fit though.