bounce box
n.— «The couple also has another method of replenishing—what they call a bounce box. “You bounce it from town to town and go through its contents. If you need shampoo or nail clippers, you use it, then send it to the next town you’re going to hike out to,” explained Brant.» —“Local couple will hike Appalachian Trail” by Marilyn Kammer Orange County Register (California) Mar. 29, 2001. (source: Double-Tongued Dictionary)