One of the money making schemes for online games is to offer "In Game Purchase" for players. By investing a little extra cash (usually small amounts here and there), a player can gain an extra advantage or receive extra resources that are normally impossible or difficult to come by.
While discussing this topic with some gaming (non-chess) friends of mine, we wondered whether such a scheme would work in chess. A couple of obvious suggestions were to buy extra pieces during the game, to pay for a second move in a row, or to simply bid for the result of the game. Of course non of these are in anyway practical, but a more subtle approach may still work.
Rather than have 'in-game' purchases, 'in-tournament' purchases may work instead. Organisers could offer 'Joker' cards, which when played before the start of the game, would earn play double points for that round. Or a 'Veto' card, which allows a player to not have a particular opponent for that round. There might also be the 'Restart' card if a player doesn't like where a game is headed, or even the 'Do-over' card, which is used at the end of a game. But to maximise profit, the organisers would also sell 'Immunity' cards which cancel the effect of any played card :)
Of course this is all just for giggles, but if you could add 'effect' cards to chess tournaments, what would they be?