Here's something a bit different. Like a lot of busses, my charge has a few broken window finger latches. I did find replacements online, but thought "Hey, I have access to 3D printers. How hard can it be?"
And the answer is, "Not that hard!" An hours measuring, modeling, and printing gave me this new green one to test out...
I actually think the new one is stronger plastic and not nearly as old and brittle of course.
What gets interesting is the potential to redesign the part you push on to project out more so you aren't pushing with fingertips only.