Forbidden Planet padlock
Needed a padlock for my locker at work, I discovered the Master Lock 1500iD. * It seems to have been inspired by the lock outside the Krell laboratory.
A disk can be pushed up and down, or to the left and right, in a supposedly unlimited sequence. Though the lock comes with a pre-set combination, you can change it to anything you want.
https://www.amazon.com/Master-Lock-1500iD-Combination-Assorted/dp/B002TSN4SQ
* Note that the model number ends in iD. "Monsters, John... Monsters from the padlock!"