I carry my bluegill popers in a small C&F knock off box. Since the poppers are small and I tend not carry a great deal of them, this seems to work fine.

I did carry my smallmouth poppers in a large foam lined fly box and still do from time to time, but have switched over to a box with 6 compartments. Most of my smallmouth poppers are hard bodied so I am not all that concerned about them getting crushed. I carry my largemouth bass poppers in the same style box. Most of those are made out of deer hair and are larger so the this style of box works for me.

Dave