No, but I'll work on that this week. :)

I use a metal engineer's field case. Its a shallow box about 13"x7"x1-1/4"deep. It comes with a hinged metal lid. It holds my siggy stamp, small ink pads, marker pens, etc in the box and flat paper towels for cleanup and a cushioned stamping surface clipped on the inside of the lid. I've had it since I started letterboxing but darned if I can remember where I got it. It has worked great for me.