I am not really one of those people who has a million things on their key chain because, well, I've never needed to. (It's all shoved into the messenger bag that doubles as my purse.) I am one of those people that has a million lip balms, because a) I need them and b) I lose things a lot.
Somebody invented a lip balm holder that you can put on your key chain. I love it, and I fully intend to make at least seven, because I'm pretty sure that's how many lip balms I have floating around. Maybe more.
Ravelry page (free download -- Ravelry only): Chapstick/Lip Balm Holder
Not on Rav but you need a visual? Check out this post on Growing Free.