It's too late now, but for a few years when I was doing quite well financially, I thought about finding and restoring an Austin A40 Devon for my parents. They had one when they were first married and I thought it would be a nice 3rd car for them and it would be a "Thank you" from me for the life they've given me.
Edit: Just so everyone understands the "too late now", they're both still alive, but the thought of either of them driving is scary. They're in their ninties now.