Jigsaw puzzles exercise your mind and your fine motor skills. But what about other visual puzzles that force you to stare until a secret image is revealed? Here are some examples of great optical illusions to confuse and inspire:

Optical Illusions and Visual Perception Puzzles

Remember Magic Eye visual puzzles from grade school? When all your friends could see the dolphin except you? Try your luck with the Magic Eye Image of the Week!

Then try your skill with these visual puzzles from Psychology today:

Can You Solve These Visual Thinking Puzzles?

Image courtesy Flickr user DennisSylvesterHurd