Frodo ends up going to the Undying Lands. It's a mythical place beyond the mortal world. His departure is a way of finding solace and leaving behind the troubles he faced during his quest. Many believe it's a fitting end for his character.
Fanfiction can also offer them a chance to relive their experiences in different ways. Maybe they enjoy seeing how other writers imagine their thoughts and feelings during the journey to destroy the Ring. It could also be that they like seeing their friendship explored more deeply or from different angles in these fictional works.
It was a poem in ancient prose, but it was still unknown which work it came from. This poem meant that whether one came to this world or left it, there would be a kind of sadness and pain. It expressed people's thoughts and entanglement about life and death, as well as their insight into the pain and joy of the human world. This poem expressed an open-minded attitude towards life. Although he had seen through the bitterness and joy of the human world, his heart still could not let go.
It could be that Tony is there to check out the school's science facilities. He might be interested in funding some new projects or upgrading the existing ones. Since Peter is his protege, he wants to make sure that the school provides a good environment for Peter to grow his scientific knowledge. Also, he may be scouting for new talent among the students. He knows that young minds can come up with fresh and innovative ideas, and Peter's school could be a great place to find the next generation of inventors and scientists.
One reason could be for an advanced placement test. The Hogwarts professors might have recognized her exceptional magical abilities from her pre - Hogwarts education and wanted to assess her early. So they invited her to come early to take some special tests to see if she could skip some basic courses.