An ounce of home

You're embarking on a yearlong round-the-world adventure, and can take only one small object with you to remind you of home. What do you bring along for the trip? - The Daily Post

My phone. It has all my pictures on it and I can use it to call/message/e-mail home if I want to.

Yes, I'm a smart-arse.

As if I'd go on a yearlong trip without it.