Quarter games and/or tournament ideas for cabs with working coin doors?

[Epyx]

I have my coin door connected to accept tokens/quarters etc and have a stockpile of about 2 rolls worth of quarters.  I will be having a break in the cab slash poker party in two weeks which will see the cab officially unveiled to my friends.  Anyone have ideas on things to be done with quarters that can be both fun and preserve the feeling of inserting credits with coins?

To keep this PG you can safely assume there will be drinking/shots involved in most of these!

My thoughts/ideas so far:

- Tournament round...random game selected each player has 2 quarters with which to put together the highest combined score.
- Play a quarter gobbler like Metal Slug 3 and each player has 2-4 quarters. See who can get the farthest.
- MMA Capcom Tourney. Each player has # of quarters to match participants. Whoever wins the most total matches is champion.  Each person plays each other person.  IE winning 1 of 3 but still losing a match still earns you 1 match point.

[DJ_Izumi]

Make it take poker chips?