The seven-piece cube puzzle by Piet Hein, rendered here in wood with a lovely checkerboard pattern.
Sweet! This is exactly the same as the puzzle I picked up in Prague! Leave it on your coffee table and it will act like a decorative cube. Watch your frustrated guests try to put it back together after their curiosity gets the best of them. One of the little things that make me happy!
I loved fooling around with the standard blue plastic Soma cube as a kid. This wood version is a much nicer quality and much more attractive version of the same puzzle. The light and dark colored wood makes for an attractive cube design, but only a few of the many cube solutions produce exactly this pattern giving an extra challenge.