I've fallen prey to the recent trend of adult coloring books. I purchased two as gifts and then I bought three for me. In my defense, one was only $3.00, so I feel okay about that. The Just Add Color series really caught my eye, so the Carnival and Circus ones are mine and the Day of the Dead one is a gift.
Then the cheaper one was an art nouveau book:
And this last one was sent to my mother. She moved to a retirement-type place in Florida and all her new friends are older ladies, so I told her she and her old biddies can do some coloring. Plus I read that article about taking up art in your old age can help prevent the Alzheimer's. (Of course, in searching for that link, I also found google results that told me that putting off retirement, exercising more, antidepressants, and going hungry can also all stave off Alzheimer's...so...)