I just lost my lens cap so I wanted to try out the LensPen, which we've seen before. Luckily, they also had a brand new laptop screen cleaner which was very cool. There are three functions here—a keyboard brush, a screen brush, and a carbon black cleaner for the screen. You brush off debris then rub the screen with the carbon black cleaner to get rid of dirt and oil. The kind man at the booth put his own nose grease on a laptop screen to prove it works.
They also have a television cleaner and a mini-screen cleaner for cellphones and camera LCDs.
Product Page [LensPen]