This used to be, hands down, my favorite journaling medium. Caran D'ache neocolor II's. They are water soluble but I never use water with them (don't want to curl the edges of my collage). I love the look of a good artist crayon and they go over everything! I actually discovered the copic markers when I was looking for a pen that could go over crayons...and the sketch markers do so beautifully. You would not want to use a fine line pen over the crayons, but they have a charm and an energy that does wonders for a page.
our waxed polyester thread we sell at www.teeshamoore.com. One spool will last you a lifetime probably. However...any waxed thread or cording would work for bookbinding. this is just the best and it is a pleasure making art when you have good materials. These are my 2 favorite colors!