Adult coloring has become all the rage. I have a couple of books but have also searched the web to find some different images to play with. I came across this site:
I printed off a few of the fairies and mermaids on one sheet together, so they ended up being a little under 4x5.
I've been experimenting with colored pencils and different mediums to blend them. I think Prismacolor Premier and Gamsol with blending stumps are my favorite, but unfortunately I only have the 24 set. There is a limit to the number of colors, obviously, so I'm saving for a bigger set.