OK There are at least 2 cheap auctions in their last day right now, with Atari cone buttons (I'm pretty sure they are the kind that light up) but no bids. They won't ship to Canada, so I am tempted to let you all know about it.
HOWEVER, in light of a recent thread, I won't post the listings if someone PM's me to tell me they are already watching them!
Hint: They aren't listed as Atari buttons...