Amazon.com This case looks pretty solid.
http://www.rei.com/product/733023
Made by Eagle Creek, very well made. Holds the Eee perfectly, with room for power supply, mouse, headphones, even a paperback or little sketchpad. Many pockets and storage places.
I like it cause it's a shoulder bag, dimensioned like the Eee, and especially because it doesn't look like a computer bag--better security if folks don't know what's in there.
