Like ramster said: run some classified ads with some of the stuff for sale, and when people call, let them know you run a store and they can come down to meet you there. You might even sell a few things a little under market value, but require the sale gets completed at the store as a commecial transaction. That can help you get some people into browsing mode (and people rarely come alone).
if you can, try to come up with an angle that your local news might want to clamp onto. Visits by "name" people are always good, especially if you can arrange for those people to be available for your local media for a few minutes. TV only needs a little time to make a decent story out of it.
Alex