This is a target that I made for shoot hockey pucks at, but can be used for a variety of things. It needs a string to be able to attatch to something else, but I am working on a variation that does not need this. I printed this with PLA, but when I tested it the target broke from impact. Flexible filaments would probably work, or something stronger like carbon fiber.

Also on Printables: https://www.printables.com/model/264497-hanging-target