I was going thru my desk drawer a little while ago and found my pocket ash tray. It's 4" long and will hold a spare battery and 2 cartos, or it will hold 4 cartos for my KR8. This will work good for when I'm going to be gone all day. The top snaps tight and you push a button to open it. You can find them on Ebay for about $6 with shipping. They also come in different colors.
