Hey guys, what do you guys do during the winter months? (This probably won't apply for warmer climate riders, of course)

Being that my first winter is coming up, I'm trying to figure out what I want to do and what is the best way to stay in shape.

This is what I could come up with:

Ride in a gym setting?
Ride a trainer in your home?
Winter ride with a old bike? (Not really excited about this)
Mix of all three?
Other?


Cheers!