The YOT puzzle is a shiny metal disc that comes with a real US silver dollar. The challenge is to open the YOT and remove the coin without power tools. $34.95

It may look like the original YOT puzzle, but it's not. It's heavier and thicker, contains a US silver dollar, and most importantly, it's a different solution! $59.95

An alien artifact? Artist Kynthia has rendered the Martian anomaly in a beautiful gold plated sculpture. Mounted on a mahogany base. 6" x 6" $59.95

Stimulate your creativity with a good whack!! This deck of 64 cards is a CREATIVITY TOOL that helps stimulate original thought. Learn to think...outside the hedge. Release the creative genius inside. $16.00

Tease your eyes and intrigue your mind with this extraordinary collection of optical illusions, visual games and sight tricks. A bustling compendium of visual puzzlement and pleasure. $19.95

The original CLASSIC YOT puzzle is now an 18k gold collectible with an antique silver dollar. $125.00

The Illusion of Vincent is a pseudoscopic illusion that combines art and perception to trick the brain into seeing a moving portrait of Van Gogh that is so powerful that it startles the viewer. $49.95

The Sound of Motion -- Doppler Effect CD captures the eerie sounds of things moving as detected by Doppler Effect microwave. Listen to the hidden sounds of nature and things. $29.00

Mighty Mind Benders. Challenge your intellect with grid puzzles, word problems, anagrams, magic squares, and more. For the very smark . . . that is smarf.  3-3/8 x 4-7/8 in; 51 cards, 75 puzzles. $13.95

Now, Hi-Q kids of all ages can challenge their brains with magic squares, dot games and more. Have some fun.
3-3/8 x 4-7/8 x 1-1/8 in; 51 cards, 75 puzzles. $8.95