Zepto by Stromwerk provides solutions for people on the go. Measuring 20.5cm x 11cm x 1.5cm, this portable solar-powered battery charger can be used to recharge laptops, cell phones or other portable gadgets. You can also recharge the Zepto’s internal battery through a normal outlet in the office or home. If you want one, you can buy the Solar Loader Zepto for $207 a pop.