Mine is still working but the one you use is dead.
So, if someone wants to buy one and bring it to the game great and then we all chip in for it. If not I can get one and you all chip in for that. It should only be about $3-$4 each as the cost for a cheap one is about $18.
UPDATE: The cheap listings don't have batteries from what I saw quickly. I haven't really investigated in detail but we need it to have batteries upon delivery.
I will bring the batteries