Puzzles: low profit and expensive to ship, but yes, they do sell.
Vases: made of glass would be very expensive to ship, I would think. Assuming we are talking about glass.
Socks: I have yet to add the faux tapestries to all of my old uploads. I do price them on all my new ones. Not sure if I have ever sold one or not. I would probably take the same approach to socks. Can't see them as a big seller or much profit in them even if they were.
It has been a while since we have had a new addition to the product line up. I would think we are about due for something.