there's also a Hidden Mickey on one of the Treasure Chests in the treasure room. the lock on the chest to the right of the sitting skeleton has a Hidden Mickey on it. There are also the cannonball craters in the fort wall, which create a Hidden Mickey.
New OrleansSquare - Hidden Mickeys - FindingMickey.com
there are also a few that are only at WDW that get confused for the ones at Disneyland... like the pirate skull hidden mickeys on the hats.