Under the Sofa Speedway

I noticed a dark gap running along the bottom of the couch and dove straight in. It was like an underground tunnel! Dust bunnies scattered as I slid across the smooth floorboards. Right near the back leg, a shiny gold metal paperclip was wedged against a lost red marble. I nudged the marble with my foot and watched it roll out into the light. Found myself a brand new secret track!