(Trust me, you'll be just as happy that this post has no photos.)
I've come to regard the crochet hook not just as a fiber arts tool, but as one of life's most basic gadgets. It's not in the same league as the lever, the wheel, and the inclined plane, but it's just the thing for retrieving small objects from or through tight places. I've fished a ring out of a sink drain and finagled a broken key end out of a lock.
Last night, in a motel in southern Iowa, I had to have my spouse use a tiny steel crochet hook to remove a cylindrical foam earplug I had jammed too far into my ear. If you can top that for unusual crochet hook applications, please leave a comment and tell me about it!