Very sad thinking of Father's Day

My dad passed on Valentine's Day this year..from only a month battle with aggressive Lymphoma. It's been difficult everyday because I know how much he suffered the last week. He could have no chemo Bec it was so aggressive, and developed pneumonia. So not only was his body being attacked horribly inside from cancer, he could barely breathe the last few days.

I miss his quirky sense of humor and low key aura. He loved watching Criminal Minds with me in his nursing home, or Chicago P.D. This weekend is the first Fathers day he will not be here. It's just really sad. I don't know what to do that day. I'm thinking to maybe buy his favorite meal perhaps and chocolate cake, one of his favorite treats.
Any other ideas celebrating Father's Day if your dad has passed? 😢♥