Melon baller.
I had a young man come into the store when I had housewares, and he was looking for a useless gift for his new wife. He said, every year, he bought his mom a baster, as a joke and wanted to start the tradition with his wife. He wanted something that could be useful, but not used. I suggested a melon baller, and when I explained to him what it did, he said, she would never use it, it's perfect.
A few years ago, a dashboard hula girl showed up at ours, and my BIL and DF fought traded back and forth over it until y DF won it.