There are only 3 kinds of coin tricks I can think of.
1. Ones that need slight of hand
2.Ones that require gimmicks
3.Ones that need both
Learn the slights, they will be the single most useful thing you know as a magician. Especially when your caught without cards or a SP or TT ect.
I actually can think of one trick that does not require any of the above. Can't remember the name of it, but I know it's taught on an "intro to magic" DVD by Michael Ammar. Uses 7 quarters, and the plot is about two thieves trying to steal a farmer's sheep.
I saw the trick performed on TV when I was a kid, and it fooled the heck out of me. Many years later, when I picked up the Ammar DVD, it fooled me again when Ammar performed it. It still brings a smile to my face just thinking about it.
All that said, in the end I agree with what people above have said. Get Bobo's book and/or Jay's DVD, learn the sleights, and you'll be much better off.