Not my original idea, but I've I've seen it lots of places here on the forum.
Take an empty Altoids or similar-size tin, spray paint it any color you want, line it with foam or velvet, and voila! An extra carrying case for your cartos.
Now I need to come up with something for the extra-long batteries -- maybe one of those hard-shelled eyeglass cases?
Hint, hint ... Steve, we need a bigger case or PCC for the XL batteries.
I would actually like a thin pen or eyeglass type hard case, large enough for one or two XL batts with a cart attached, and a couple of carts. I love the manual batts, but I am always worried the button will be depressed in my pocket while I am out and about, and I can't carry a loaded batt (even a small one) with the cart attached in the current line up of case. A thin hard case would be perfect for that - sort of a 'day case'. I will try to see what I can find and perhaps mod one, but this would be something I think more people would like to see, and hopefully Leaford and the rest of the V4L crew will consider the development of something like this in the future.