Awesome, @nosweargamer! I guessed it! The GemStik is special to me as it's the first Atari controller I ever fixed. It was unresponsive and the rubber coating thing was coming off. Not my favorite, but a good second player controller. Has a nice button.
Sadly, it seems my 7800 won't be coming today either. They HAVE it, so that's good, but they need to test it or whatever. I won't be able to play on Atari Day, but I WILL be able to play it tomorrow and Japanese Atari Day (28th, 2800)!