Best Practice: Seek Competition Among Peers

Within Phone Sales we have an opportunity to either prop each other up or to knock each other down.  We are obviously all motivated by different things.
Why not seek out competition and devise tactics to keep your own production level and degree of effort at a premium?
IDEA:  Challenge a colleague to (one-on-one, row vs row or other) contests and set consequences for winners and losers.  Make this job a game.
EXAMPLES WITHIN OUR WORLD:

• Highest percentage of talk time for the previous day = Loser buys the winner a candy bar or soda
• Most number of statements obtained (must be driven from a cold call started after a certain time frame) = Loser makes 10 quality cold calls for the Winner the following day and the Winner maintains any prospects earned