I am a big fan of MythBusters. They use a lot of shock watches on the show.
Has anyone used one of these when shipping their bike? I have not been able to find a price on a single shock watch but f they are under $10, it might be worth putting one on your box.
I am not sure if your bike would be handled more gently or if it might act as some kind of challenge to be broken.
Anyone have a guess on which one would be the best to a box being shipped?