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Experience mesmerizing magic in slow-mo with the Trestle Tracks Builder Set! Each set features hollow stacking cubes and perfectly flat tracks with...

Stack hollow cubes to magically propel stainless steel marbles down a track for a truly mesmerizing experience! Eighteen special tracks grow wider ...

This single wheel is built in skeleton steampunk style, which means you can see and enjoy the beauty of moving gears. Despite its airy and delicate...

How can one interlocking shape unleash such wild imagination? Build this unicorn in any direction, from flat to 3D. The 70 pliable, puzzle-like pie...