Flyfire Vision

" Mechanical fireflies could help create a new kind of 3-D display, say researchers at MIT.
Standing in for the bioluminescent beetles will be LED-fitted, remotely controlled micro-helicopters that can be choreographed electronically to display shapes and images as they hover in midair. The project, called Flyfire, would use RC helicopters similar to the toys sold at the mall today.
“Each of the helicopters then acts as what we call a smart pixel,” E Roon Kang, the MIT research fellow who is leading the project, told Wired.com. “By controlling their movement, we can have the pixels flying through the air. "