Thanks for the compliment. It was an old canvas tackle bag I bought which I modified with some scrap leather, a speedy stitcher and a wooden dowel. It's especially nice because it has a waterproof liner and a leather-covered flap.
I think the original brand was Eddie Bauer, but it was basically a knockoff of the more expensive Orvis tackle bags - something like this:
It was a fun project to learn to stitch on, and saved me a bit of money at the time, considering the Carradice, etc. alternatives.