Light Festival Ghent 2015 featured “Cloud”, a light installation by Caitlind r.c. Brown and Wayne Garrett in Ghent.
CLOUD is an interactive light sculpture in the shape of a cloud, made of 6 000 old light bulbs. You can turn them on and off with light cords that represent the rain.
Programme information from Lichtfestival Gent. Short excerpt quoted for reference; see the original page for full text, images and credits.