I like this Earth Care sketch book, which I bought on Amazon quite a while ago. I can't find the same format, and I've ordered Grandluxe's Grandluxe Cream and Blue Monolette Lined and Perforated Blank Notebooks Compact Set, Set of 2, 3.5 x 5.5 Inches to see if it's the same paper. If it is, I may do a giveaway, though I'll probably have to add something else to it. These were so cheap, the S&H would be more!
I used Sakura Koi watercolor brushes to color this. They are great when you want saturated intense color without effort (not so good, if you want tints, muted colors or pale areas).