I'm going to Dreamhack on April 28-30, then to PDX Lan in July, and then Quakecon in August.
I built a mini ITX computer in the Silverstone Raven RVZ01-E case so I can still have a full sized GPU, but it's still small enough to fit in a large backpack for carryon on flights. I just take my monitor and put it in portrait mode and throw it under the seat. I just check my clothes, because I figure if I'm going to a LAN, it's more important to have a PC than having clothes since you win a lot of T-shirts there anyways. :grin: