I was in the camera store today and picked up a grip for a still camera to offset the balance of the EX-1. It has a foam grip and a mount for a second wireless receiver for around $50. They had one for $17 that would have been fine but it was chrome instead of black. It works perfectly.
Here's a similar unit on e-bay. The chrome $17 one.
Sounds nice, I could use a place for the sound receiver, and perhaps they can add a cup holder to the other side or place for craft service to drop off a little something for us. I feel a little lopsided from time to time without eating. LOL