What if we used a giant one of those things in carrying out the sentence in capitol punishment cases?
The condemned would be placed in a large walled compound along with several remote controlled vehicles each equipped with a huge zapper. He or she would then be free to run around trying to avoid being slapped down with these gargantuan electrified nets controlled by a group of people in a glass skybox. The nets would be equipped with such a powerful charge that, upon making contact, in addition to being electrocuted the condemned would be flung across the compound to forcefully splatter into a wall.
Or we could make a game of it! Maybe using soccer goals with electrified nets while the drone/paddles (which may or may not be electrified) are divided up into two teams and the aim is to push or swat the condemned into the other teams goal for the win.