Every camping checklist should include rope. Some common uses are guy lines and clothes lines. Coghlan's packages several clothes lines. The one I like best is shown in the picture. It is 25' x 3/16" polypropelene, and it includes two rope slides. This rope will easily attach between two trees or poles set up to twenty feet apart.

Coghlan's is a Canadian company that has been making outdoor accessories for over 45 years. You can find Coghlan's Ropes, Cords and Straps in most sporting goods stores.

(Photo © Coghlan's)