I have a shameful confession - I just went out and bought a MELON BALLER!!!
Looking through my gizmo drawer I also found a butter curler, an avocado slicer, some paper lace doilies, an egg pricker and a julienne slicer - none of which has ever been used as far as I can recall.
Come one, fess up and be absolved.
Edit: Also an olive pitter