$70 to $110; FastMac

Reusable bag

Keen's Alameda 15 bag

Keen's Alameda 15 is a stylish messenger-style bag with the standard fixings: an internal pocket for 15-inch laptops, external and internal document pockets, two water-bottle pouches, a mobile-phone pouch, and a number of smaller compartments for miscellaneous items. But two things make the Alameda unique: First, while it's not as protective as some other bags, it's surprisingly lightweight (just 2.5 pounds) and flexible. Second, it's designed with the environment in mind. The durable base is made of excess rubber from the company's shoe business. The laptop sleeve is made of recycled polyester and recycled and reclaimed foam. And the zipper pulls and the strap's cam buckle are made of aluminum recycled from old shoe molds.

$100; Keen