I fell in love with these trees when I saw them. I think they are made from an old mattress or sofa.
I imagine someone could cover the entire tree in balls. Maybe spray paint it white or black or green. Drape tinsel garland around it.
I, personally, like it the way it is, the tree. What would you do to it?
By the way, I have 3 of these trees left, and they are for sale at Primitiques for $15 each. Come and get 'em! The old window screens are extra.