If it got much simpler, there would be nothing to see. Snap a 9v battery right into the LED light snapper doodad and press the button on top to turn on the light. Voila, instant glowiness.
I guess you hold the Battery Snap by the base of the battery. Something about that just doesn’t seem safe to me. Just always use fresh batteries. If the battery is sticky, it’s probably not a good idea. Unless your using a liquid-powered battery. And for $4.99, you won’t find a much cheaper light source, especially if you want to delve into more exotic designs, such as the Sputnik Lamp.