@dwicks Is your dad computer literate? My dad passed at age 96, in 2012, and was on his computer to the very last couple of weeks. He did a lot of internet surfing, always learning, and playing games on it. Check with the area he lives in to see if there is a group who will come to your dad, and bring board games or even teach him chess. Does he play a musical instrument, or want to learn? Can you make that happen?
Ginger