My best friend has signed up for a half-marathon in October. It's her first in quite a while, and she's pretty excited about it. I thought it would be fun to put together a little care package for her, to show support. But I'm not a runner -- I am, in fact, a huge couch potato -- and don't know anything about what kind of supplies and things runners might need or want. She's mentioned various things in the past, but it was so long ago that I can't remember what they were. So, runners here: If someone were making you a half-marathon care package, what would you want in it? I would really appreciate some suggestions!