You can usually find a line or two about whether and what kind of supplemental material schools will accept. That is, buried somewhere in the application forms, brochures, and websites. They mostly say not to send that kind of stuff.
There might be rare exceptions, but you should probably assume they don't want it. It's the kind of stuff, though, that you may end up talking about in an interview and that will add an extra dimension to you.
If you want to demonstrate these other interests, just make sure they come up in your essay/activities/classes, etc. That's the most you can do until the interview.