Do I file Hobby Ebay sales with no profit as business or hobby?

I received a 1099-K from paypal for sales on ebay.  I live in MA and sold over $600 but far less than the federal $20,000.  I did not make a profit on the sales, as they were all my own household items that I bought for more money and no longer use, so I sold for less, like jewelry I don't use, clothes that the kids grew out of, etc.  Do I put this information on Schedule C as a business or under additional income under hobby?