I have a Sabian prototype that had rivets. I took them out a while ago because I liked the sound without. This past weekend, I was helping my student record a demo DVD for a university jazz audition. For the ballad, I didn't have any good size rivets, so I put a few nails in the holes. They fell out eventually, but it got the job done for the DVD.
For a cymbal that doesn't have any holes, the chain or coin will work too.
Jeff