I could be wrong but I think that the Bifocal Monical of One-eyed Jack has the record for the longest time before the first temple guard shows up.
I'll raise you a "The Broken Trident of Poseidon", "The Enormous Iron Nose Ring of Babe" (although some say there was a Dark Forest spirit that didn't get Joel), and a "The Much-Heralded Helmet of Sir Gawain".*
*I still hold that there was supposed to be a guard in the Chamber of the Sacred Markers, but the door didn't open. Poor Temple Guard.