Canadian artists Caitlind r.c. Brown and Wayne Garrett of Incandescent Cloud re-use discarded bulbs in their sculptures that pair audience interactivity with artificial light. One of their recent pieces comes from their “Celestial” series titled “New Moon,” which re-purposes over 5,500 light bulbs donated to them by the locals in Lexington, Kentucky. The sculpture was on display in the town’s square. The piece is the fourth in a series of installations using re-appropriated light bulbs, more of which you can explore on their website.