This one seems like a natural. After all, a flashlight and lightsaber are both the same basic shape and they both shoot light out of the end.
There are currently two - Vader and Luke's lightsabers. They feature sound effects as well as light! They're seven inches... I wonder how well they actually work as a flashlight? For $25 the answer had better be "Very well!"
I do think that they missed out on naming these things. Instead of repeating the word "light" perhaps they should be called a Flashlightsaber.