I did a room in London ON on my way to the unconference.
I have a list of issues with this room but the biggest one was at one point we found two patterned keys - ladybugs and four leaf clovers. Now in a fairy/leprechaun room, they fit right in and I expected to use them.
They were complete red herrings. There weren’t even any key locks in the room! The door took a key, which after we found I was wandering around still trying to figure out where these patterned keys went. I wouldn’t have tried anything on the door, since I had 3 keys unused. We had to be hinted to the door.
What makes a red herring a red herring, to you?