We spent last week at WDW and had a lot of fun looking for HMs.
I've got the Hidden Mickey by Steven Barrett and my youngest
daughter used it a lot.
I think we may have spotted a new one in It's a Small World that's
not listed in the edition that I have. It's right after entering the Mexican
room (red, yellows and oranges) on the right side of the boat sitting
on the deck just above the water. Three pumpkins arranged in a classic
tri-circle Mickey head. I don't think the pumpkins were really in the proper
proportions (2 small "ears" and 1 larger "head") but it was three "circles".