E-flite 1S 150 mAH Battery Organizer

I have a Nano Qx, Nano CPs and an E-flite micro plane. So I've got a bunch of 1S 150 mAH batteries laying around. I thought that there should be a better solution than to just have them scattered on my desk, so I created this battery organizer. It should work fine with any of the 1S 150-180 mAH batteries. I've personally tested E-flite, Lectron and NanoTech. The NanoTechs are a bit thicker, so they fit a little tighter.