Make sure you watch TechEd bloggers for packing tips. Usually I tend to overpack, then get swag and have to pay a $50 surcharge to get my “HEAVY” luggage back to Kansas City.
Another quick item you might want to pick up if you are a Diet beverage drinker. Crystal Light has single packages that you can add to a bottle of water to make their drink. John Alexander got me started and now I am hooked on the concept. Usually at these events, the first thing they run out of is Diet Coke, and there is always plenty of bottled water. This is a simple subsitute that you can leaving in your conference bag for those moments when there is no Diet Coke! Also, check out Diet Coke with Splenda, that is some good stuff.