For shooting adventure videos on the fly, nothing beats a GoPro ($400). The latest edition is really slick and takes incredible HD footage. It's the smallest GoPro yet, with 30 percent longer battery life, four times faster WiFi, a sharper lens, and a new auto low-light feature. There are plenty of mounting accessories if you want to attach your GoPro to your head, body, car, bike, backyard squirrel . . . the creative options are endless.
GoPro Hero 3