If you’re gearing up to go back to school, can we let you in on something that might be the most useful thing you get for yourself all year? Solar-powered bags are a super handy and stylish way to keep all of your gadgets and gizmos fully charged with clean green energy. Plus, since you always carry your bag with you, you’ll never leave this easy way to juice up on the go at home. Read on for 7 of our favorite solar powered bags for back-to-school!