Review on SMART&CASUAL 150 ft φ 3/16 inch (5mm) Nylon Poly Rope Flag Pole Polypropylene Clothes Line Camping Utility in Black: Tie, Pull, Swing, Climb & Knot with Ease! by Tyrell Rike

Bought to mark the boundary of the site. I used landscape brackets to secure it every 3 feet or so. The result: a bright yellow demarcation line between my yard and a neighbor's yard, making personal maintenance easier for both of us, whether it's mowing or shoveling, with the added benefit of making it easier for me to wire up my robotic lawnmower next spring. .