Pixar's UP was such a great film, and the unlikely duo of Russell and Carl formed a very strong relationship. Here's a great piece of fan art created by Kristal Babich that pays a touching tribute to the film and the bond these two characters had.
The piece is called "It's Been An Adventure, Mr. Fredricksen," and it features Russell at Carl Fredricksen's funeral, several years after the events UP. It was also pointed out that he still has Ellie's grape soda bottlecap badge that Carl gave him.