I have vague memories of a movie I saw as a kid that I really want to re-watch, all I remember is a kid that is mute ever since his twin sister died, he carries around a box with bits and pieces of her memory in it, he plays video games and is a bit of a whiz and in one scene his family drives past this huge yellow dinosaur and it brings back memories of his twin sister...
That's about all I have
Anyone seen anything that may be this movie?
Thanks!

The Wizard (1989) (http://www.imdb.com/title/tt0098663/)