A common issue with the Nikon L35AF auto-focus 35mm camera is that the battery flap door gets loose and needs replacement. This isn't a replacement for the door, but it's a grip that compresses the door to give the battery a good contact, and is a cleaner and reliable solution to duck tape.
3D printed with black PLA. The model is available on Thingiverse, you are welcome to download it and print it yourself, or consider printing it at your local library or community fab lab:
