add drop bars with bar end shifters, a brass crane suzu stem bell, slick tyres such as the compass or Schwalbe Marathon Supreme, stainless mudguards, dynamo hub with lights, a set of silver Kleen Kanteen reflect water bottles, a back rack and a set of pannier bags, and you will have an excellent commuter aswell as a good winter bike.

here's mine (work is still in progress):

here's as it was found:



here's as it looks now (I've also added a Brooks B15 Champion Narrow saddle aswell as a pair of Schwalbe Marathon Supreme 26x2" slicks since taking this photo



here is a good thread that will give you some ideas:

http://www.bikeforums.net/classic-vintage/828426-show-your-vintage-mtb-drop-bar-conversions.html