Raw Wood with Rough Grains
It is a large whole piece of wood having prominent grains and barks. It can be treated as raw wood material for industrial style furniture.
 
Jigsaw Puzzle Texture
It is a jigsaw paper material with some missing pieces.

The color map can be replaced by your favourite photo to make it a real puzzle.

The amount of completed and missing pieces can be controlled by the SBSAR file. The colors of puzzle pieces can also be changed. Besides, the height random and tilt can also be tuned.