A friend on mine uses a leather doctor bag with an attachment for a Eureka Table. I'm considering switching to this for my hobo, as the look fits well.
I also prefer case tables myself for my magic stuff. For balloon supplies, larger magic tricks, and general storage - I use a table similar to the one Charles "Chaz" Misenheimer uses. You can see it by clicking on the link below, and scrolling down to "Strolling Magic at the Zoo."
Magic by Chaz - Photos of Recent Appearances