A Giant Leaning Tower

I scrambled out of the wooden train car and scampered toward the low shelf! Two heavy picture books were leaning against a thick rubber bookend, leaving a narrow, cozy tunnel underneath. I squeezed in, but my round tummy knocked against a wooden ruler propped on the bottom rung! Clatter! The ruler tipped over like a miniature drawbridge, landing right on top of a giant roll of transparent tape. I hopped onto the slanted ruler and gave a cheerful bounce—wheee! The heavy tape roll rolled forward a whole turn, flattening a curled ribbon of paper bookmark against the oak plank. What a handy little flattening machine!