One of the most important pieces of equipment we suggest here at Outward Bound Costa Rica is the headlamp. We often tell students to be sure to bring one of these handy bits of gear, not only because of its convenience, but also because it gets dark around 5:30, and you will simply need a light for a good part of the day.
The Icon Headlamp from BlackDiamond seems to be doing all the right things. The light is beyond bright, waterproof, has numerous settings, a red light option, and a well balanced set up. Needless to say we would love to get our hands on one of these.