Light as a cloud, cream is every coffee connoisseur's dream and a real challenge for every barista. The electric milk frother is the device of choice most often. These types of devices are battery-operated and usually have a cylindrical shape with an 'antenna' ending in a 'socket' that is responsible for frothing the milk. They take up little space, but depend on batteries for their operation. However, if you want to reduce the use of electricity in your daily activities, opt for a manual milk frother.