An animal or human form that transitions into a machine, or machinery is integrated into the form.
Create an action scene using simple geometric forms interacting with one another (floating, balancing, falling, stretching, etc.).
Make a six panel comic of a person entering a bus or taxi and then have something very strange happen.
Find many of the same thing and alter each one, ranging from unchanged to almost unrecognizable. Line them up in a grid against a color background and take a picture.
Make a tree but instead of leaves, replace it with something else. Have the objects you choose leaving the tree and the people interacting with the objects.
make a person viewing a painting and have that painting jump out and become reality.