Hello - great question. This peel & stick Kids Map of the World, pattern #WPE0624 will stick to most smooth, flat, non-porous surfaces - including walls, the fridge, etc. It may stick well to a piece of plywood, if it is painted or finished so that the surface is not porous. If it is rough plywood, the decal may not be able to get a good seal, and the texture of the wood may show through in the design of the map, affecting the final look.

Thank you, l thought that would probably be the case, but l wanted it to be portable, just asking.

maybe try canvas instead boards instead.