Heyho
Spare parts can often be made with the 3D printer, and I have done this quite often over the last few years.
Unfortunately, most parts require a certain extra effort in assembly and production, or the parts are so specific that hardly anyone else would benefit from them. That's why I recently deleted most of them in a digital clean-up operation.
All that remained was an assembly tool for toilet seats with M13 nuts, which I had made for our kindergarten. The ones that come with the kit are often thrown away or lost immediately. I also have a stand for a friend's keyboard that had broken off. (Unfortunately I can't remember the brand).
Maybe the parts can be helpful to one or the other!
Have fun!