The kind of thing that would make me change career...

Renovating a home, and building a puzzle in. Maybe not for the current homeowner, but for the next residents and generations to come. But what would happen if they renovated the place, or changed the bed? Sigh... I'm a romantic at heart, but it's like when you're building a D&D campaign, sometimes the players just can't solve the puzzles, and you have to help them out, which hurts things a little.