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Seriously clever! A headlamp around a gallon of water = ambient light for your tent and a great night lamp when the power is out.
Powertraveller Ltd. This is the Powermonkey Expedition Charger, which may set a whole new standard for “off-grid charging devices” with the Expedition, you can use solar, wind, running water, the hand-crank handle or AC to juice it back up, Its revolutionary design even allows you to generate power via solar and wind simultaneously, giving a full recharge of the battery in 5-8 hours in optimum conditions. Coming May 2014.
Time-out bottles. Fill a bottle with 3/4 water, 1 bottle of glitter glue, & ultra fine glitter. Then send this bottle with your child to timeout & they can watch it settle to calm them. Once the glitter is settled their time is up! (if they mess with the bottle their time out time is longer)
The SteriPEN Classic UV Water Purifier featured in PCMag.com's "Equipment for High-Tech Camping"