Speaking of paper (paper shopping bags, and using the other side of watercolor paper) I still have tons of this paper called 'card stock', which is usual sized 8.5 x 11 inch paper, but is thicker than usual. It can be used to make greeting cards, by folding it in half. It comes in multiple colors.
I was actually able to sell about 10 pounds of this stuff, for 1 cent per sheet, on Craigslist 2 years ago, but no one wants it these days.
I made myself donate some of it to my church, and the lady reluctantly accepted it.
I'm greedily hanging onto about 30 pounds of it, waiting for the resurgence of Craigslist demand!