Handwarmer/Smartphone Charger Combo ($34.99) Sharper Image Convergence is your middle name. It used to be Brock, but you changed it. Your seemingly never-ending search for a convergence device that could warm your hands, charge your smartphone and illuminate your path finally led you to this product, a lipstick-looking doodad that warms your hands, charges your smartphone and triples as a flashlight.