Making a few wood bases for Cribbage Boards , what is the best way to ship them ? They are 20 inches Long x 6 inches Wide x 1 1/2 Thick for each one. I was thinking of using one of the USPS Large Flat Rate Boxes . For packing material, is that plastic bubble wrap needed ? Making them out of a combination of woods. Walnut/ Maple. Cherry/ Maple.