A rope! Duh. But not all ropes are actually made of rope. Ropes come in cloth (regular rope), speed (skinny cord), beaded (plastic beads that CLACK when they hit the ground), and even electric.
Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, GA 30333, U.S.A
Tel: (404) 639-3311 / Public Inquiries: (404) 639-3534 / (800) 311-3435