I'm sorry for your loss but I'm glad that you can still support his widow and I think she would appreciate time with you talking about him once you are over Covid (also sorry you are dealing with that!). I was going to suggest a charitable donation in his memory if he had a cause that was dear to him. When my step-dad's mother passed away they had a few charities listed that they were asking for donations to instead of flowers. My kids are animal lovers, so we chose the SPCA to donate to and the family got a card stating we had donated in her name.