Speaking of winter projects, have you ever considered building your own boat? I thought about that for a long time, researching boat plans on the Internet and measuring my basement door to see if what I might build would fit through it.
My wife was terrified, wondering if some huge project would linger for years unfinished. Then I got lucky and found the home-made skiff shown here. The guy who made it in his garage soon decided he wanted a bigger boat. So I was able to buy this boat very inexpensively (partly because the resale value of owner-built boats is typically very low).