>Wool mesh underwearTerribly indecent, amazingly comfortable in both cold and warm weather. Vents heat great when I'm moving, holds heat just fine when used as an under layer.
>Light rain gear Mostly because I associated rain gear with the heavy oilskins I have at work. It was eye-opening that I could wear such a light and thin layer and still stay dry.
>MSR WindburnerJust amazingly handy to bring along to boil water for freeze-dried meals, oats, or warm drinks.
>Lightly insulated Jerven Hunter bagVery much also a nice-to-have thing. Used it while posting up and waiting for some geese late one night. Got so warm and comfy that I fell asleep. Only woke up when another hunter walked past me without noticing me. He didn't think it was very funny when what he thought was a rock stood up behind him and said "boo".
Works alright as a sleeping bag, more than fair as a poncho in rain, and great as a wind sack or blanket. Haven't tried using it as a tarp, but probably works just fine like that too.
Any trip that warrants bringing a backpack, I'll bring it, and I always keep it in my car if I'm driving far in winter.
>>2827128>HeadlampEasily one of the most useful things I've bought too, and regularly use even if I'm not going very far out. I have a Black Diamond spot 400. I specifically wanted a light one without an overhead band, since I use it through winter and it would get in the way of the fur on my warmest hat. Oh, and it was cheap on sale.
The red light is super handy for tent use, getting up to piss, or for extra visibility in winter when I'm walking the dog along the road shoulder in the dark season.