The Window Socket created by Kyuho Song & Boa is a potentially revolutionary invention that provides a neat way of taking advantage of solar energy in a convenient form factor.
The portable charger can be used anywhere with direct sunlight. Its suction cup makes it particularly useful in locations with a window such as houses, cars and planes. The solar energy supplied for charging is converted and stored in its small internal battery. When it is completely charged you can carry it around to use later.
The store power (1000mAh) could charge a mobile phone although it needs to be developed in-depth to reach the point where being able to power household appliances.