I like the pumpkin pie "power up's" you find in the dumpsters after the thugs devoured the Turkey dinners , After they completed raging against streets ...
I always enjoyed the fully cooked whole Turkey dinners that you'd find randomly in back alleys while fighting thugs in the Streets of Rage games.
I liked the Flying Hat from the N64 game. I put that on to race the turtle. It worked! Then he chewed me out for cheating. >:(
I don't remember Pong having any power-ups.