Recently, while at Home Depot, I decided to pick up some paint sample cards in all the dif shades of white to try out Zentangles on. I usually pick some up whenever I am there but in colors as I love to use them to punch shapes out of as the shapes come out with nice crisp edges and they have such a nice finish and great colors. But this time choose various whites or light colors. I used a Sharpie pen for the following card's Zentangle. I think I'll do a bunch of these and punch a hole in the upper corner and bind them on a ring. I'll use them as a resource when doing more Zentangles as I find it very helpful to look at dif designs to inspire me for what I want to draw in the next space I'm filling in.
And the price is right - free is always good!