The people over at EMF Pulse made an epic guitar hero game with LED strips that were 8m tall. We laser cut them a larger sign which was more visible at night. It's a terrible shot of the awesomeness but it was pretty dark. The sign is made from a sheet of foam core, the pulse letters were removed and backed with red cardboard. The rest of the lettering was outline and ultimately coloured in with black pen with it was too hard to read.
Emoticon