I'll be there! I'll definitely have my Express but can bring a Duo, TG16/CD setup and/or Briefcase.
If we have a good internet connection there (wired preferred) I can bring a computer I built for live streaming and a camera or two. It'd also have the ability to stream gameplay from a TV. It's not all cutting edge technology anymore, but would be better than a cell phone streaming on Facebook. Maybe Null's already got this covered. I know he ran in to some technical difficulties last year, but maybe they're all ironed out now.
I only have 5 or 6 controllers, but I could also bring a Saturn, Saturn Bomberman, and a Bomberman tap. Heresy, I know, but it could be fun.