The Striped Tunnel
A thick knitted wool sock lay curled up beside the bottom shelf of the bookcase, looking just like an arched mountain tunnel! I sprinted across the polished floorboards, dropped down flat on my stomach, and wriggled headfirst into the opening. The soft ribbed fabric hugged my sides with a cozy grip! Pushing hard with the tips of my plastic feet, I squeezed past the heel bend and popped my head straight out through the stretchy elastic cuff. Best obstacle tunnel ever!