@thyname This is getting even more confusing. The simple fact that you received a 1099 when you don't have a business throws a monkey wrench into the whole tax filing process. There are good links above that indicate that getting a 1099 from Paypal should not happen if you don't have a business. But you got one and now you've got to figure out what to do with it.
It is my understanding that you can't just ignore a 1099. If your return doesn't account for it somewhere then you will get a notice from the IRS that you have a problem with your return. Schedule C is the only place I know of to account for a 1099. I do consulting and I've received many 1099s. Schedule C is where you account for your expenses against the 1099 income. It is not set up to account for the sale of personal items if you have no business. The problem is that I don't know of any other form that deals with 1099s.
I searched using multiple criteria and I found several articles saying that the Paypal 1099 is not intended for the casual sale of household goods but I could not find anything that described how to account for it on your return if it only includes the sale of household items.
Too bad we don't have a CPA in the group who would generously provide us free advice. In the absence of that I think you'll have to go to a CPA for an answer. When you get this figured out please let us know.