Jeff Harris Thule's Go Box
| Credit: Jeff Harris

Conquer scattered trunk junk with a car box, the new road-trip necessity. We love Thule’s Go Box, which has stiff walls, anti-skid pads, and is collapsible (800/722-5872;; $75).

Other organizers to consider: Mountainsmith’s Modular Hauler System (800/551-5889;; from $50) and Fleurville, Inc.’s Auto Bag (866/510-8967;; $250). No more misplacing the tennis balls—or the tuna sandwiches.