Snowboard and kite. (Outdoor sports are the key to having fun down here)
Two decent cameras. You can get away with just a pocket jobby, (Canon Ixus (Ixii?) are quick and even work in -40C!), but if you're thinking of a DSLR, then it's well worth the cost. Nikons and Canons both work well down here.
Laptop and music.
Winter present / personal project materials. There's fantastic workshops, so if you feel like making something, bring the bits!
Magazines. Other than Q, there's not been a restock for a few years, and it's getting familiar. Order a year's back issues of your preferred volume and ration carefully.
Indoor entertainment - projects, models etc...
Nice treats - chocolate, sweets etc
Everyday chocolate / toothpaste / shampoo etc. It's all here.