Actually I keep it in my Eagle Claw hard case for my rods. When I am out hole hopping I have the small jig box from clam (2 sided) with my go to plastics and my go to jigs. This fits right in the top pocket of my Hummingbird locator.
Can you fit the dual sided clam bag in a pocket or is it too big? If I can fit my mini jig case in the other side of that, I really like that set-up assuming it isn't too thick. Didn't see any depth dimensions, just length and width.
I use a coin purse I got on ebay 4''x5'' it fits nicely in my chest pocket of my coat.
Wal-Mart in the crafts dept carries the small 2X2 ziploc plastic jewelry bags. Add a drop of scented or non worm oil, works great for storage.
I use the Clam dual sided soft sided bag for mine. The zip lock bags are big enough to store the original packages in. Also gives a side for extra jigs on the other side.
I had a few questions regarding plastics but after reading through this thread, it answered pretty much every one of them. Figured it was worth a bump, some good info here.
One thing I didn't see covered was storage. Wondering what people have come up with to store them in. I like to keep mine in the original packaging but don't want to just throw them into a storage compartment or plastic bag. I found the Soft plastic wallet from Claim, anyone use one? Can you add more pages or are you limited to 10? I don't want to have to carry 3+ wallets around just to store plastics. I could see using it at an "on the go" storage if limited to 10 pages.
Edit: I did find several other "wallet" style storage containers, but they are designed for open water and way bigger than needed for ice plastics.