Thanks to the Grouphug Designer Window Solar Charger, you don’t need to own your home to get electricity from the sun. With its bamboo frame that hangs on a suction cup, it provides a way for renters to use solar energy. What’s more, it’s a great fit for anyone who can’t shell out the cost of a rooftop solar setup. Additionally, this compact solar panel looks great as it hangs in your window, so it will blend in with your decor. Its built-in rechargeable 3,400-mAh battery gains power throughout the day and night. In total, it takes eight to 10 hours of direct sunlight to charge completely. However, it will still charge even in partial sunlight and cloudy conditions. Once full, it will power an iPhone up to two times and an Android phone 1.5 times. The USB port makes it easy to connect your device to this 10-watt panel.