Gifts for a newbie soldier?

In a little over a week my brother is shipping off to Army basic training. What would be an appropriate gift would be?

Though I'm open to other ideas, if at all possible I would like to have it be an item of tradition and symbolism, as an engagement ring is to an engagement or pilot's wings are to a pilot. Also, it needs to be something that I can have in hand by the end of the week.

While we are at it, what are appropriate brother to brother gifts (or, more generally, sibling to brother as I have a sister) at other milestones in a soldier's career?

Unless it is otherwise impossible, please do not post your suggestions in the comments as my brother does read this. Rather, if you have my email or phone number contact me that way.

Thanks!

Edit: Another thing to consider is giving something as a brother who is a fellow American verses as a brother who is a fellow Christian.