Paper is my big hoarder collection. I have piles of it that I either made or collected over the years. Thankfully it doesn't take up too much space, but keeping it orderly is another issue. Among the art that I have made on paper and the scraps of art I have various art papers. The most special to me are the washi papers. I mostly use them in my sketchbooks these days where a little washi highlight can go a long way. So beautiful.