Troy was wandering from person to person instructing them on each of the items they might have been looking at at any given point. As he approached Enjolras he noted the piece he was looking at and grinned brightly before slipping up next to him, "It looks like a golden key, but it wasn't actually a key. You'd attach it to a long reed or stick, whichever one you needed depending on bendability or what have you, and it was used to collect things from hard to reach locations."
He then stopped, "Also, I believe it was likely used as a back scratcher as it seems more prevalent to use that. I've used it as such and it works wonders, can't really ignore the every day use of it, which makes you think they didn't as well."