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Optical Illusions & Visual Oddities I Playing Card Deck
Deck I contains 55 optical illusions in vibrant color. Instruction booklet included. -
Optical Illusions & Visual Oddities II
This fascinating playing card deck presents 55 optical illusions in color. The instruction booklet written by J.R. Block, PhD shares an explanation of each illusion. -
Optical Illusions Playing Card Deck
Optical Illusion Playing Cards will make you look twice. -
Creative Whack Pack® Deck
Roger von Oech’s Creative Whack Pack is a creativity tool designed to "whack" you out of habitual thought patterns and allow you to look at what you’re doing in fresh, new ways.