It's pouring rain here again today, and it's got me thinking about this thread and making one of those fires in tough conditions.
One thing I try to always include in my fire kit is a piece of aluminum foil. Finding a dry piece of ground can be really difficult sometimes. I always make a platform out of branches for my campfires, but when it's wet like this they can suck the life out of your tinder. A little something to get it off the ground can really help, and aluminum is one of those tiny and light items that can easily be added to a fire kit. It can also make a great windscreen. I've never tried it, but an Altoids tin type container should work just as well, I suppose.
I like waxed paper for the same purpose, and it is also a great tinder.
I think it was the meth heads that ruined the strike anywhere matches. UCO looks to have stopped making theirs too.