A Light Challenge
This USB-rechargeable brainteaser will never leave you in the dark. Well, only occasionally. To solve the multi-layer puzzle, just figure out how to turn its interconnected lights off. A series of clear acrylic layers snap together magnetically to form 3D circuits that light up in a geometric, glowing sculpture. Only one combination will make the cube go dark, but getting there is half the fun as you tinker your way through a shifting light show. Great for desk fidgeters and tech toy lovers. Designed by Eric Clough in New York. Made in China.