I produce a small wallet size pouch that I have had a lot of problems figuring out how to make it close without impeding on the design of the pouch. The opening is a little over 3 inches. Its used to carry a cell phone and maybe some credit cards. A magnet would be perfect but for anything to get in the bag it would have to pass the magnet. Perhaps this is a stupid question but is there are magnet that is available that won't pose a problem for the cell phones and demagnatize credit cards - or even some sort of technology other than a zipper or snap that is available on the market that will fit well on a small leather good?