Yep...Was not a lot of aftermarket do dads for the bike, at least compared to other models.
Kawasaki did offer, under the "Fire and Steel" banner a fair amount of optional stuff- luggage rack, extended sissy bar with pad, hard cases with dresser bars, engine case crash bar, a full frame mount touring fairing, touring front fender, floorboards, Master Cylinder cover with the Vulcan logo, a small "V Force" windscreen, and even an embossed tank bib with pouch.
Highway Hawk..a company based in the UK , but with an importer in Florida, made several items for the bike - larger crash bar, full chrome air filter covers, a "chrome" coolant tank cover (an item I bought), and I think they even had a tool box that replaced one of the air filter boxes for those doing an ears have.
Givi had a hard case mount for its mono-key hardcases, but was only available overseas.
Flanders and Emgo had wide chrome levers ....for both master cylinders...
Jardine had a luggage rack and a set of forward controls..
Mustang, Saddleman and Corbin all offered seats.
Vance and Hines I think still offers an exhaust.
Most of this is no longer available other than being lucky enough to find it on eBay or being sold by someone here.
Perhaps if you told us what you're looking for we might be able to help you out.
The bike stopped production 9 years ago and many of those items stopped being made before that....so yeah, it's really a matter of luck being able to find anything now....