What a lovely idea, Jeanius! You've probably already purchased the items, and I agree with your thoughts to choose co-ordinating colors in soft acrylics and a book with a few simple patterns, such as the granny blanket you are doing. Lighter colors are easier on older eyes, and a larger hook size, such as a K, is helpful. My elderly friend always crochets with a K and knits with a 10 1/2. She is now totally blind, still making blankets for any baby she hears about and donates the rest to crisis pregnancy centers. I'm so proud of her! And truly, it is a blessing to her too. She listens to talk radio or audio books for the blind while she works on her blankets. Let us know what you chose for her. I'm very curious!