You'll see dispensers like the one Matt linked in the OP for candy like Lifesavers in some store displays. I've never seen anything like it sold at retail expressly for dispensing batteries though. Both that and the design Cris linked to would be pretty easy to make out of wood or any material able to be cut/shaped with wood-working tools. I have a few 1/2" thick $5 polypropylene (or similar) cutting boards from Ikea that would be excellent raw material for something like this.

Thanks for the reminder Matt, I need to buy a bunch more Eneloops to finish replacing the remaining standard NiMH I still have around. I also really want one of those large capacity Maha chargers that handles each cell individually.