Lindt truffles wouldn't work for me to give as a hostess gift. They wouldn't make it from my house to the gathering!
In Japan, where hostess gifts are a big deal, guests are encouraged to bring something that represents their region or city (even to other locals). Consequently, in the prefecture known for their apple orchards, every little shop has lots of apple-themed gifts in decorative boxes specifically intended to be hostess gifts - apple candies of all kinds, apple jellies, apple crates. Is there something that would work as a hostess gift that represents VA or Williamsburg?
Another idea - if you can find a deal on elegant glasses, then you could buy a set and bring one or two to the gathering filled with chocolates and wrapped with a ribbon. I still have a stunning cobalt blue thick-walled tumbler I was given full of pencils years and years ago. It technically has a flaw in the lip from being hand-blown, but I actually love that flaw because it proves it was hand-blown!