I don't know about you, but I don't like having loose camera batteries in my bag, so I'm always looking for a way to keep them together and secure. There are many cases out there for this use. Search Amazon and you'll find a ton in all shapes and sizes. I like to use the Think Tank DSLR Battery Holder 2 as it fits the batteries for my Olympus OM-D series perfectly.
Other options are Tom Bihn organizer pouches in both the padded and non padded varieties. Don't even get me started on Tom Bihn's products because I absolutely love them. You'll see them sprinkled throughout my reviews as I have many of their bags.
If you really don't want to spend any money on an organizer pouch for your batteries, you can go totally DIY and use a travel size Q-tip container. I'll credit my friend Mike Boening for sharing this idea at a workshop that we both attended. You can find these containers in your local supermarket in the aisle where they carry all of the travel size items. These are perfect for Olympus OM-D sized camera batteries. Sorry folks, but your Nikon DSLR batteries will not fit in here.
Anyway, check out my video below to see the various items I use to carry my batteries. And don't forget to check out Mike's site too: http://www.mikeboening.com/
I would also like to plug Brian Matiash. I found the idea of using the ThinkTank DSLR battery holder as a lens wipe holder on his site. Check out his video on YouTube where he mentions the lens wipes around the 8:18 mark. Be warned though, I guarantee you are going to have gear lust after watching his video.
If you are interested in purchasing the Zeiss lens wipes shown in mine and Brian's video, you can get them from Amazon.