The feud between Elves and Orcs originated in the first age when the Elves invited the Orcs over. During the stay, the Elves electricity bill was high due to the increase of vacuuming.
I built the vacuum cleaner first and wanted to build a vignette using the wood-like pieces for floor. After realizing that I did not have enough light brown pieces to complete the floor, I used the dark brown bricks to so that I could make the floor long enough and represent dirt. This is one of the advantages of being a limited LEGO builder, because you are sometimes forced to be creative which can make the product turn out better then if you had almost unlimited LEGO bricks.