A Wheel from Nowhere

I pushed past the edge of the living room rug and spotted something round gleaming near the table leg. Why was a stray green bottle cap just resting upside down? I rolled it forward with my snout, testing how smooth it spun over the hardwood floor. It wobbled, then bumped against a wooden craft stick. What if these fit together? I nudged the stick into the hollow of the cap, leaning my paws against it until it wedged into a makeshift ramp. Now that’s a useful little tool!