I keep all of my LF lenses in tupperware containers that fit the lens while mounted on a lensboard, the most common size I use is the size for sandwiches, heck they even float, I found this out a couple of years ago, when I took a spill and my bag spilled in a creek, found two of my lenses about a mile down stream, no damage at all, good as new, you often times can find these types of containers at dollar stores for something like 4 for a buck, damn cheap protection that holds up quite well.
R.