My favorite tribute to George would probably be the Concert for George because all of his friends and family came together on the 1 year anniversary that George passed and they played the music that he made and sang. It's pretty cute and a good way to pay tribute to a friend who passed away. And it was arranged by Olivia and Dhani, and all of the songs were selected by Eric, his best friend.
Also I love the poster for the Concert for George.