Less honest people would start selling plans for free energy machines.

My father and I did a stunt like that only using his radio transmitter and I had a 4 foot fluorescent tube. I chanted some babble and then i command you to LIGHT. He hit the key on the transmitter and BEHOLD, THERE WAS LIGHT!.

I then quickly commanded it to go out.

Repeat a few times with amazed people watching then go back to normal stuff.