Thinking of the larger context of LOTR and like, the fellowship swapping old war stories and shit and Sam just says “Yeah I killed a huge spider…Shelob, I think?”
And Gandalf just blinks and is like, “You what now?”
“Yeah, killed it. Had to save Frodo”
Gandalf elects not to tell Sam that he killed the spawn of a primordial demon.
I don't know if this was obvious to everyone else, but I just realised that one of the reasons why the Hobbit is so effective as a children's book is that while Bilbo is an adult, the skills that make him a hero are all those of a child.
By human standards he's child-sized, which makes him unobtrusive and light on his feet. He can slip by unnoticed where bigger people can't.
He's good at playing games, and even cheats (successfully!) in a way that - let's face it - is not so different to how children try to cheat at games. He's polite in a way that's fully comprehensible to children (rather than, say, being able to perform courtly manners). He's quick-witted, but the trick of keeping the trolls talking is also one that would be achievable for a child.
He doesn't have magic powers, he's not a great fighter, and he's not some kind of Chosen One. There's not much that he does that couldn't be done by a ten-year-old, but the story shows just how valuable all those skills and traits are. It's very empowering.