Spoonflower design is a cut and sew apron for men, which makes use of my diamond plate fabric. I altered it slightly after these pictures so that the chain looks a little better and the pockets are a little taller. I used linen-cotton canvas to make this one, but I don't recommend that, unless you are using a machine and needle designed for heavy-duty sewing. I think the Kona Cotton would be sufficient for this project.
Despite including a lot of pressing and hemming, this is a pretty easy project. It only took me about an hour to complete from first cut to finish.
Sew ends and length of tie 1/8” inch from edge.
(This will be the top of the pocket. You can tell which way is "up" by paying attention to the shadows.)
These should have openings in both ends to slide tie through.
(It turned out this was one advantage to the canvas. It was so stiff, the safety pin wasn't really necessary.)