The Big Lebowski: a toe... with green nail polish OR a Folger's coffee can OR a ferret's head (marmot)
Tron: a beeper (which could also work for TBL) OR a quarter or CLU's/Rinzler's helmet
X-Men: Xavier's Cerebro helmet
The Simpsons Pinball Party: a radioactive rod (like from the opening of the show... bonus points if it glows green)