Great work John, and kudos for putting up with the horrific suffering that comes from caffeine withdrawal.
And I feel your pain (in a mortal way). I one time forgot the lighter on a Rainier trip on a cold spring weekend. We had to turn around at high camp with no other parties around to bum from, no way to melt snow, and no liquid water in sight. Safe to say, my partner wasn't happy, and neither was I. I won't make that mistake again!