If your ideal beach day includes gadgetry (hey, we're not judging), don't let a loss of charge kill your buzz. This easy-to-pack flat-panel charger's 5,000-mAh battery stores enough juice to revive an empty smartphone twice or a tablet once. You can charge it via a wall outlet – or just leave it in the sun. [$100; etoncorp.com]
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Action-Packed Summer Trips
Race Dune Buggies, Explore Italy, Bike Yellowstone
Plus: Fighting Poachers and Oil Companies in Congo
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Nick Offerman's Life Advice
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