If there's one thing that can convince me to never participate in a LAN again, it's packing up my computer and carrying it somewhere else. I have an ITX machine that wouldn't be a problem to move, but then there's all the other stuff you need.
The PC-Pack from LanSlide seeks to ease that process. It's a backpack with all sorts of pockets and slots and sections and so forth that are designed for the purpose of carrying around your kit. A slot in a bag that fit a keyboard snugly would be a dream come true in my life, I can say that much. I think I'd feel weird about having a monitor up against my back, though.
LanSlide PC-Paks [LanSlide]