If you could go back in time and grab one item...
You can go back to any date in history and grab ONE item. The item has to be relatively small, you have to be able to carry it yourself. You have to know where and when you can grab the item, you only get one chance to grab it (you have one day max to get it).
It can't be plain old money, it has to be an item. NO LIVING THINGS!! It CAN be something of personal or monetary value, though. It could be something that you lost or it could be something like a souvenir off the Titanic. It has to be something we KNOW exists (or existed) and you'd have to figure out when and how to get it, it's all up to you, if you fail you do NOT get another chance so choose wisely!!
I've put basic categories, you can comment on the specifics of the item you choose.