A case? For a lighter that costs less than a buck? I don't see the logic -- or the value.

Unless you want to dress it up and pretend it's a Zippo. Zippos are cool and I love the way they look; but for me it's the Bic in the pocket that gets the job done.

For durability/storage, you could wrap it in thin packing foam and wrap it with duct tape or electrical tape. Not sexy, but effective.

But the standard solution for ensuring that you have a working Bic is to pack a spare or two in every pack and jacket you own. Why wouldn't you?