I really wish airlines would put a little more thought into creating amenity kit bags that have more usefulness after the flight. So many bags just end up in the trash, or a junk drawer, or just left on the plane and presumably trashed. Over the years, and hundreds of amenity kits, I can only recall a few that I've kept and used regularly, among them a Braun Buffel one from LH first that's my regular toiletries kit now, a shoe bag from AA, a shoe bag from UA, and my favorite, a simple mesh bag from UA biz that I now use for the gazillion cables one must now travel with (there was a similar one from ANA too). The simple mesh bag is so useful that on a couple of flights in GF, I asked for it instead of the GF one.
What's your favorite amenity kit bag that you still use?