Key Chains
Managers have many keys. Keys to open and close the store, open and close the safe, open and close the registers, open and close offices and supply closets. They have a lot of keys. Even with that many keys the manager will still personalize their key chain to create their own unique noise when walking around fulfilling management duties.
On a related note, I have inadvertently startled many a coworker with my accidental silent approach. I promise I use my natural born stealth ability for good. …Mostly for good.