Enlarge image
Go to checkout
Also known as 3D Stereograms, each of the strange myriad patterns has an incredible 3D image hidden inside. They are not always easy to see as you must relax and defocus your eyes before the image appears - various techniques for achieving this state are described in the book. A few people can never see them, but most can learn and with practice see them faster and clearer, the results are always startling, fascinating and quite unlike any other visual effect. There are over 60 Eye Tricks in total with solution sheets in the back showing the hidden image you are looking for.
Write with the invisible ink pen, then rub over with the other pen to read. Think secret messages
A crowing, catapult-style, flying rooster
A seasonally attired Xmas Woodpecker on a stick