birch bark eye goggles
No brainer.
See a little farther in blizzards / snowy conditions. (could lower the current visibility in those conditions when without this item)
Knife + birch bark + cloth. ~30mins.
Make it break down relatively quick. (pretty easy to re-make / repair).
Would look cool on the character doll too.
As is, all birch bark does is tinder? broaden the scope! For pete sakes. or pete's sake.
Cool, can you mail order those? I would wear them to work.
On a more serious note - snow blindness would be cool feature. If you spend much time outside when the sun is up, your vision gets temporarily impaired. Sunglasses would then be another useful item in the game. Or those Birch bark goggles as the renewable alternative (of course your sunglasses have a tendency to break in a fight).