I found the perfect replacement. It is an aluminum travel case for a bar of soap. It is waterproof and is almost exactly the size of an altoids tin. It has a rubber edge seal and no hinges. I found it at a little store that sells gifts and such and they told me they got from China. I'll post more info if I find it but the key to solving this was bar soap travel cases. <smacks head> sometimes it's the simplest things we don't think about.