Do you have some old photos that are special to your Dad? Maybe one of him holding his first child, or teaching them to ride a bike, or of an old car he owned. Why not take those pictures and turn them into black and white photos and frame them for him to display. If you enlarged several of them and framed them it would be a beautiful piece of art that also had special meaning to Dad.
We are thinking of doing something like that with some pictures of a 1961 Buick Special that my husband used to own. I found the photos on the computer, and then with my software I just changed them to black and white photos. I suggest making a copy so that you still have the original.