I got really into buddhism in high school and had some pretty strong (hippyish) ideas that material objects had little to do with happiness. Meditation and Buddhism is still pretty cool to me, but I have some pretty strong associations these days between certain 'things' and happiness, and I mostly embrace it. The obsessive nature of gear nerdery is when it gets to be somewhat negative.
I'm beginning to associate backcountry skiing with happiness, so clicking into my DYNAFIT BINDINGS usually brings some sort of inward smile.
Definitely, UL puffy jackets, because of the instant comfort they bring. They're one of the key things that help me feel more at home in the mountains. I'm not a comfort-monger, but the mountains have their share of cold and its nice to be able to to relax when you you're stopped, weather to slowly take in a summit view or enjoying a conversation during a snack break. Currently, its the ARC'TERYX NUCLEI. Besides being quite warm for the weight, its also very protective in a way that most light puffies aren't.
Not backpacking related, I love my MOUNTAIN HARDWEAR FUID RACE VESTPACK I prefer to go without a vest, but for long and (or) leisurely runs in the mountains, I like to have a shell, camera, food and sometimes a light puffy. It took me trying on and testing a lot of vests to find something I liked this much. The others, I just kept fiddling with straps trying to get a stable fit or messing with how I pack. Through superb fit and simple but effective features, this pack just feels like its made for that job. Besides having to loosen for ascents and tighten for descents, I pretty much don't think about this thing even with a full days kit. Also, I much prefer to use a vestpack like this for day hiking and peak bagging, since it gives you the option to run.