Neoprene Shoe covers should be good enough if you're not going below freezing. I got Northwave winter shoes for sub-freezing.
I have 5-6 pairs of winter gloves in different weights depending on the temp. I buy $5 -$10 gloves form discount clothing stores, or the "sale" bin at whatever store I happen to be in.
I sometimes carry lighter gloves in my pocket if the temps are likely to rise mid-ride
Maybe a thin hat under the helmet.

Also, check the "winter cycling" forum.