Little watercolor sketchbooks are a great gift idea for artists. I take mine traveling as they are small and can easily fit in my purse. I sketch and paint in them while sitting in a cafe or when I have a few moments to myself. They come in several sizes. Since I like to paint with watercolors, I get the ones that have watercolor paper in them. The Moleskine brand is very popular and easy to find. They are available online but also easily found in office supply and bookstores. I found a lesser known brand that I prefer. It is the Pentalic Aqua Journal. I find that the paper is a better quality and great for painting with watercolors. The Moleskine paper is 200 gm and the Pentalic is 300 gm which means that the paper is a heavier weight. Watercolor artists will appreciate that!