I am so sorry for your loss. Cherish all of your fond memories of him and pass on those wonderful memories to younger members of your family so that he will live in their hearts too.

If you can, you might think about sitting down and writing a journal about him. Put in writing all of the things that you loved about him and a few stories to go with it.

I had an Uncle who wrote things he remembered about his Aunts and Uncles.
In particular he wrote about an Aunt and what wonderful pumpkin pies she made. Somehow reading that made her come alive for me - as someone that I wished I had known. I think she is pleased that she is remembered in such a loving way.