I could be a walking item monitor like someone's cosplay I saw at K-con, and hand out golden rings to whoever beats me, in rock paper scissors. I may do the same thing with a Mario ? block and mushrooms.
Though the items being handed out will in fact be foam rings and half balls ontop of cylinders, all spray painted with the colors of awesome.
As for the skit, I could walk by on stage and have sonic bash me for a power ring or something.
One comment could be about eating day-old chili dogs and having Robotnik smell it as he speeds away.