ride them past bikes, 4 wheelers, dogs, kids with wild toys. like silly string or the pool noodles things. You can use one of those little honky horn things that goes on little kids bikes around your horse to see how they are with random loud noises. Whistles, guns. (around here there are guns being fired off at our parades) random screams. (like from little babies)
Me and my mare went to one parade, and that was enough for me. There was so much more to it then what I though. The fire trucks were the worst though! SOOO loud!