A chess set laser cut out of acrylic with free templates.
Place the grid pieces on a 12×12 inch ~4.5mm sheet of acrylic in an 8×8 grid for the chess board itself. Because the acrylic glue can leave bubbles between pieces, I just left these unglued and loose. I like this a lot more, and makes it look a lot more haphazard and visually interesting.
Using two of your favorite colours, cut out two sets of chess pieces and grid squares. Depending on your cut quality, the chess pieces may press-fit together (though hopefully not too tight, or they may crack), or you may have to use a little acrylic glue to seal them together.