I also noticed that on the trash cans in Disneyland there is a Mickey. I don't know if anyone reported it but if not then I am.
REPORTED: TRM Hatter 05 APR 01
CONFIRMED: N Martin 21 MAY 01
By the phone booth between Tommorowland and the Matterhorn bobsleds there is a manhole cover in the traditional Mickey shape. I have only seen this one, but there could be more throughout the park.
REPORTED: Leanne Heuchert 19 SEP 97