Mine is called "Force a Coin". I have the coin in my hand, mind you the coin can be examined before hand. I ask them to pick heads or tails and do a flick right after it, the coin spins up and turns into another coin. Just to make this clear, you can only do this with a 50 cent piece, quarter, dime, to penny. 50c piece to quarter, quarter to dime, and finally, dime to penny. I can't do this affect with a Silver Dollar or Nickle. I can do this both gimmicked and un-gimmicked. However I like my gimmicked version a lot better because it's smoother.
All I need to do is use misdirection for only 2 seconds, not even. The misdirection is so simple though, sometimes you don't even need it. It's as quick as putting your hands into your pocket and your done with the setup.
The reason I use "pick heads or tails", is because it's the perfect invite, I have never had people walk away from me or have a bad reaction. When I got this affect polished up and finally showed it to some people, even though it was my first time, I still got amazing reactions from it. This is not a routine but I am still trying to figure out how to incorperate it into a routine, it's hard to make it a routine.
I was thinking of just putting it in with "Silver Dream" and then once I get down to the last coin, Then I can start doing the multiple change to the penny and vanishing the penny. I haven't tried that yet though. I am still doing it and trying to see if there are any "kinks" in it.