Fun with mirrors

Noah was supposed to be cleaning his room, but I found him doing this:

 He said, "When I look in the mirror while it's pointing at the ceiling, my room looks perfectly clean!"

 Then he took the mirror into the kitchen and pointed it at the skylight.  It made it look like there was a big hole in front of him on the kitchen floor.  It was such a convincing image that he wouldn't take a step forward.

He flipped the mirror over and pointed it at Shiloh, who was walking by on the floor.  He said, "It looks like Shiloh is spider-walking across the ceiling!"  The whole mirror thing amused him for a long time.