- Full fenders (though this is obvious on a rain bike)
- Loose ball headset
- Shimano loose ball hubs
- 7 or 8 speed downtube shifters. Only 1 piece of housing to worry about.
- I'm partial to Shimano cartridge square taper BBs though. They last several years, even in winter abuse, and are so cheap and easy to replace I'd rather do that than rebuild a loose ball BB every season.

Properly maintained these parts (except the cartridge BB) will last forever. The key words are properly maintained. If you let your headset go until it got crunchy, you waited too long.