-Bring up the idea of them using whatever money (that they can use freely) to make signs FOR the student section. By signs I mean random big heads, generic saying, bricks, spinny things to distract shooters, whatever. Then they can distribute them randomly throughout the student section. The kids that do make and bring signs are usually buddies with the other kids that are willing to do it. So what signs are there you usually see all in one part of the student section.
-Have poster/costume contests more regularly (and tell us about them earlier than a few hours before gametime..) A contest might seem "lame" to some, but if it encourages kids to bring random signs and dress crazy then you're promoting chaos at least a little bit.
-Keep the waving the arm thing for free throws, it would distract me if I was shooting. BUT have the arms wave AS he shoots it, not after.
-This one would probably be far too much effort for them to ever consider, and from a student-organization standpoint might be too inappropriate to ever happen.. but they could do research on opposing teams players and coaches. If any of those players would happen to have an interesting past (anything that students could ride on them about) throw it on that Cyclone Alley report thing they put on all the seats before games. Imagine every student knowing something about a player and being able to get under his skin with it. (Again, probably too inappropriate for them to even consider.. I just think it would be cool)
-SPEEDO MAN BEHIND THE HOOP TO DISTRACT THE FT SHOOTER. Ala the fat guy from Utah State.
-The biggest point to make is that chaos should be promoted, not feared. There are so many kids that go to these games just to go, and feel far too self-conscious to really go crazy in the student section. Promote craziness, if some kid shows up in a freaking speedo, and jumps around and screams the whole game, he should be rewarded with guaranteed front row seats to the next game. Who doesn't want front row seats? That would definitely encourage kids to just let loose and have fun out there.