Domino Blockade

That gap between the bookshelf and the floor was an open invitation to disorder! I spotted a stack of bright plastic coasters lying abandoned on the rug. Ask for help moving them? Never! I hoisted the heaviest red disc over my head, hauled it across the hardwood, and rammed it upright into the wooden groove. One by one—red, blue, green—I wedged them edge-to-edge until they formed an impenetrable defensive barricade. A stray marble rolled down the room and slammed right into the red barrier with a sharp clatter, stopping dead on impact. Flawless structural defense!