I admit that I am tempted to make an exception on my 'no batteries' rule for this game.
I even have more suggestions:
1. Put the game near the steam (if you are cooking) to see the actual beam!
2. Try to look at someone from crazy angles while you are carrying the board!
3. Make even your own futuristic versions of the game by using the existing pieces
and/or create new levels (e.g. use the yellow piece as a reflective part to hit more targets!).
I am open to new suggestions too!