Located in the show room of the queue for Indiana Jones is a big classic Hidden Mickey head on the left wall towards the screen. It is made up of cracks and color differentiation.
Above the Tiki room exit, there are 4 shields. Near the bottom of the left shield is a possible hidden Mickey. The proportions are ideal, but the ears (smiley faces) are perhaps a little too triangular.
This image is in Tarzan's Treehouse, in the room where Tarzan is getting sketched. It is a keyhole on a chest.
Look in the last room of Tarzan's Treehouse. If you look at the far right curtain knobs, you will see it form a Classic Hidden Mickey. Notice that all the other knobs don't fully form a Hidden Mickey. - In the room with the sketches being drawn behind you are curtains hanging from ropes, and at the ends of the ropes they are tied like a HM.