These drawings are satisfying because you get a 3D result very quickly, and don't have to wait for anything to dry. As soon as the white is added, everything begins to pop out. If you don't want to go out and buy colored paper, old paper grocery bags work well.
These pencils, both the black and white are Prismacolor drawing pencils from the art store. I was happy when I discovered them. They are very nearly as permanent as ink. I can't erase or smudge them. (Sometimes that's good, sometimes it isn't.) I'm left-handed so smudging is a major concern for me. Every time I write a senctence, the heel of my hand smears right through what I just wrote.
Another thing I like about these pencils is the black is much blacker than a regular No.2 pencil. Sometimes if you tilt the paper just right, regular No.2 pencil lines almost become silvery and difficult to see. If there's a shiny light the reflective No.2 pencil lines can even become white.