Cloud

Avoti: http://www.thisiscolossal.com/2014/07/the-cloud-light-a-thunderstorm-in-your-house/
http://www.richardclarkson.com/cloud/
http://www.thisiscolossal.com/2016/10/a-levitating-wireless-speaker-in-the-shape-of-a-storm-cloud/?src=footer