Dice Rolls always make for fun spiffs and the variations are endless. Be creative and keep your team motivated. The most popular that I have seen are:
The sales consultant rolls his 2 dice, the sales manager rolls his two dice and the sum total of the roll is paid to the sales consultants. This variation can grow with double rolls, triple rolls etc. Another fun one is to multiply the first die roll with the number on the second. My personal favorite is to multiply the number rolled by the number of cars sold so far that month for the sales consultant. For example if the sales consultant rolls a 9 but they have sold 4 cars they would get $36, if it was their 7th deal they would earn $63. This way they get more money with each sale"