Wobble Chess Set by Umbra
The maple and walnut pieces in this set have spherical steel weighted bases, so they wobble when moved. As for the board itself — which is made from the same maple and walnut, alternating — each square is concave to create smooth, rounded surfaces for the pieces to sit in and remain centered. The wobbly effect this creates during gameplay is charming and somehow makes the game feel more lively.
The Wobble Chess Set is $250 on Amazon.