Well, morse code is a good thing to know if you are ever in certain kinds of emergency situations for example. Rescue personnel, military, people involved in extreme sports, etc. all have an incentive to learn alternative methods of communication.
I was always good at blacksmith's puzzles, never thought I'd find any use at all for that particular skill. (intertwined pieces of iron or steel, you have to twist and turn the things to find a way to get them apart) Then I started working as a farm mechanic. Ended up rescuing goats from various fence lines, often on multiple occasions. They'd stick their head through to nibble at something on the far side, then their horns get stuck when pulling back. They then almost invariably proceed to bend and twist the metal while struggling to get free, often just making it worse.
The ironic bit is that they're much smarter than most of the other animals I deal with...