In the Japanese tradition of kintsugi, broken things are repaired with gold (or silver) joinery, so that the repaired object is even lovelier than the original
Bed Post with Japanese joinery. (I think that is what this type of joint is called.) this would work great for a raised bed corner.
For centuries before the invention of screws and fasteners, Japanese craftsmen used complex, interlocking joints to connect pieces of wood for.