I agree with >>3436605
winter is just gunna suck the life out of you cause you haven't been able to go out and shoot. I had a fun trip in Japan in January and haven't shot since then cause it's so cold my gear would run the risk of damage. Go review some past stuff, read some books talk to some like minded people - anything to just wait out the drought.
Personally I'm working on my editing backlog, but what I really wanna do is go out and shoot film. But that's not really doable with below -20C weather I've seen the last 2 months. Gear might help you if you say get a macro lens around normal range and try macro photography around the house or indoors.