Good. Set a precedent that you have to be careful of making wildly unrealistic claims.

Ultra specific storage cubbies for your favorite 5 tools. Label tags. Cabinet door knobs. Print in place toy cars with rolling wheels and doors that open. Compliant mechanisms. A coin sorting device. If they can print flexible things, phone cases.

Do not expect anything 3d printed to be food safe.

It helped me to know that checking out items helps the library.

I always thought of it as being a consumer of library resources, but the fact that the books/movies/library of things items are being checked out helps them prove that their services are useful to the community.