Try a trampoline.

I asked a parent to donate a mini-trampoline to the classroom and began using it to create excitement in my fifth-grade classroom.

Sometimes, I jump on it for fun, and when I land, I have the class yell "boom!"

Other times, I reward students who get a correct answer by letting them come up and get in some jumps.  It is amazing how hard they will work to jump a few times on a trampoline!

Without exception, visitors always comment on the trampoline when they see it.  Why do you have a trampoline?, they ask.

Why not?

Steve