More small and large gear bags.
gotta keep it all organized. 
Ditto on the gear bags - I just bought a few compression sacks for my camping equipment and some plastic bins to organize all my gear.
Other purchases were a new winter sleeping bag and new insulated air mattress.  I'm going to do more winter camping this year (-20°C and below) with my hot tent.  Last year -10°C was the limit of my gear.  I figure if it gets much colder than that, I'm probably not going to be enjoying being outside anyways so why should I buy -40°C gear?  
 
 