I grabbed a few pieces of thin wood from the Hobby Shop that is about the size of what a 2x4 would be at that scale. I took a figure to the store to get an Idea.
And that is it. The great thing is that all the strips of wood are 3 inches long and if it is not perfect, no two pallets are the same and the wood is usually messed up so you can use pretty sad looking pieces of wood.