I just repaired my old Zippo and plan to throw it into the mix. It's certainly more windproof than anything else I currently carry.
If only I could keep it from drying out.
Dave -
Wonder if it might work to take the smallest-diameter bicycle inner-tube you can find, cut a 1/2- to 1-inch wide cross-section (a mini-ranger band) and slip over the lighter, centered on/around the "joint." Would provide a near-air tight seal = little or no evaporation; ensures top-half doesn't inadvertently pop open in a kit. Rubber doubles as another fire-starting aid.
OK for a kit, cumbersome if you're going to carry/use Zippo throughout the day.
Dan