Amazon will ship 20 of its 48-inch bungee cords to your door for well under $1.50 each
Blue Hawk Bungee Cord at Lowes.com
14x Heavy Duty Blue Hawk Orange Power Grip Bungee Cords- 36” 0317684 | eBay
WORKPRO 24 Inch Bungee Cord with Aluminum Alloy Hook, 4 Pack Superior Rubber Heavy Duty Straps Strong Elastic Rope for Outdoor Tent, Luggage Rack, Camping, Cargo, Bike, Transporting, Storage, Blue - Amazon.com