Material Flashlight - Flashlight application for android with some cool features.
ClearLock - A transparent screen locker.
Tiny Flashlight + LED - Tiny Flashlight + LED is free to use application that can be used anywhere else, having nicely built-in functionality.
BlueLife KeyFreeze - FREE Windows application that blocks your keyboard and mouse without “locking” the screen.
Warning Lights - Rotating warning/emergency light in your pocket in two bright colors.
VBLock - Converged Infrastructure