The best way to describe a Room Key Necklace is that it is the same thing that you see people wearing around their necks at concerts. Back Stage Passes are hung on them. Usually a thick ribbon with a key chain type hook at the end. The hook pushes open to allow you to connect stuff to it. I'm not sure where to get them - mine is a giveaway from the Navy - Go figure! I just made up the name Room Key Necklace - I'm not sure what they are really called. Does anyone else know what they are called or where to get them?