Where is my shoe?

Have you ever lost something and never found it? How about socks, fining ah odd number? Consider this:

Due to string theory, there are billions of vibrating strings that make up everything. Also, these strings, using an immense amount of energy, can become the size of a universe, these being call "membranes" or "branes" for short. Thus causing the thought to occur what if there is we are all on a giant membrane and that there are other membranes (A.K.A. universes). These universes could be parallel meaning that the is someone just like you on another universe.

    My idea is that when you lose something, it goes to a universe dedicated to that particular object for instance shoes. Meaning that there are huge, multi-dimensional place full of shoes.