I don't know if this would be a souvenier, but it was something left in the rooms for you when you stayed on Disney property. Some time in the 1980's I obtained it.
Does anyone remember when these would have been given out? They had been tucked away and I just found them. I would think sometime around when Epcot and World Showcase opened in the early 80's.
This isn't really a souvenir, but the picture is from the mid 1950's. Where the Mickey Mouse came from I have no idea since we lived in Louisiana and never went to California. Until I came across the picture I never knew I had a Mickey Mouse or is that Minnie Mouse. I guess I should have since it was just the other day. HA! HA!