This can only be done in movies or comics, something with visuals. But I noticed that they have a character, and they put things in their room or somewhere else so that the watcher can infer character traits without making it forced. They do this a lot in the 'The Royal Tenenbaums'; because the book it was based off of went into more detail then the movie could on each character. The director decided to just make their room show their personality's. I also noticed this in 'The Amazing Spider-Man', they show a few things Peter engineered himself, and it lead to him making web shooters without going into all the science and everything. I liked that, but wondered is their more methods like this in story telling where the watched can infer things?