Solarmonkey charger with a tough water- and shock-resistant clam-shell case, attaches to your backpack hitting the trail. Unlike other solar chargers, it includes an internal battery that, when fully charged, can charge a smartphone two to three times. It takes about 8 hours to get a full charge and comes with a variety of adapters for all your gadgets. It retails for $132.
The Infrared LED Pain Reliever - Using technology developed by NASA to heal astronauts' injuries, this device's 60 LEDs produce safe infrared heat to stimulate blood circulation, relieve swelling in joints, and loosen tight muscles.