Pour yourself a drink before attempting to re-weave the Coaster Pocket Puzzle. Taking it apart is easy. A simple twist and the three metal pieces fall into a loose chain of jangling trefoils. Close inspection reveals that each of the trefoils is marked with a unique arrangement of double-sided grooves. You'll need to rotate, spin and shift the metal knot until the three pieces click back into their lovely braided arrangement—SNAP—and they're flat again. It's an enormously satisfying sensation.
Designed by Ukranian puzzle creator Serhiy Grabarchuk for Hanayama of Japan.