The Savage is a most versatile little bike.  It morphs to whatever you need.  I needed a lightweight city bike, to commute to work and to go shopping.  For that I needed luggage capacity.  Choices include a luggage rack mounted trunk, leather saddlebags, or hard saddlebags.  I went with LeatherLyke hard saddlebags.  A bit expensive (over $400) but not if they are what you want.  I have a 
BLog entry detailing the mounting of my saddlebags.
The saddlebags carry my Hat -- without which I cannot appear in public.  For shopping a saddlebag can take a gallon of milk, or a ten pound bag of potatos, or a five-liter box of wine, or a 20 ounce bag of tortilla strips and a pint of salsa.

My other accessory is a National Cycle Flyscreen.  At 9" tall and 9.75" wide it isn't much of a windscreen -- but it blocks just enough wind to keep me comfortable at 75 mph.  About $100 new,  I got mine for less than half of that, used, off eBay,