Share 'Keeping The CBG Box Shut'

Ok, so I'm in the process of building my first six-string cbg. The box that it's made of is a pretty thick and beefy mahogany. The problem with the box though is that it doesn't have any clasps to keep it closed. So what I'm wondering is ...   (1) Would the string tension on the bridge be enough to keep it shut? (2) If not, what would be a good method for keeping it shut without destroying the ou…