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As the weather warms up and blackout worries loom, conservation-conscious shoppers can crank out their tunes with Freeplay’s Eyemax radio. Freeplay is known for its campsite- friendly flashlights, but the product line also includes wind-up cellphone chargers and mini-generators. If a sore arm starts you second-guessing your off-the-grid lifestyle, the Eyemax ‘s solar panel lets Mr. Sun juice it up. $79.99, Grassroots , 408 Bloor West, 416-944-1993, www.freeplayenergy.com