Another small job today, as I was too lazy to get out early for fishing before the cill closed. My box of flares are well buried in a locker and need to be near at hand. I found a self-contained locker and lid that required a cut-out and simply screws in place. After careful measuring I cut the hole with a multi-tool and hole cutters for the corners. It doesn't interfere with the inside space because the top access to the main box is a hole in the centre, so the top corner is dead space.
I made a label using a weatherproof sticker, printed with a laser printer. The flares don't spill out when you open the box because they are retained with a bungee cord and grips, easy to rip off when they are needed.