@Tim Schroeder Thanks for the inspiration on building a tool holder for my stamps, etc.
I took 12" long pieces of 2x4 and laminated them together to get 24ish inches wide. I then placed a piece of 1/4" plywood on top and drilled the holes (lots of drilling - nearly 300 holes), then used 3/4" Knotty Alder x 4" around the border. Not real happy with the way the miter edges turned out on the Alder, nor the chipping along the top of the plywood when I ripped it, but it is serviceable. The below video captures the holder as I am loading it with stamps. I think it is sped up by 6 times normal.