Well, right now my story is getting quite messy, resembling a baby that was squeezed out of The Prestige after being impregnated en mass by the Da Vinci Code, X-men, and Blue's Clues; not a pretty thought, but you get the point Basically, my main character, Natalia, had a father who had super-advanced scientific notes capable of solving all the world's problems, or completely destroying it. He left the notes to his daughter in a secret location no one knows. However, seeing as how everyone else in the world is after it, I thought it'd be smart for him to make a puzzle (like the cryptex from Da Vinci Code) that only the main character could solve (because the answers are all stuff only she would know; like what she got for her 7th birthday, etc. I tried using a crossword inscribed onto a metal orb, but it seems like a bit of a stretch. Anyone got any good suggestions for some kind of puzzle thing with which one can hide a secret message?