They have a small "color flip" palette for $15 that has 8 lipsticks, blush/bronzer, 8 eyeshadows. It's smaller than a credit card. They're also making other palettes that have parts that can come out so you can put them in a smaller more portable compact that's usually included. 

If not, then maybe I might suggest buying a lip primer (I like Too Faced Lip Insurance), to extend the wear of the lipstick.

Or, you can buy those empty travel toiletry containers and scoop it into a small container. I've bought a pack from Walmart that has several tiny little jars with screw tops on it.

Another idea is to buy one of those plastic pill holders that have compartments for each day of the week for the pills.  They have little lift up lids.  I have seen them in all kinds of sizes, and a small one would be perfect for this.  You can get 1 at any drugstore, like Walgreens.  In fact, I am going to do that because I am facing the same problem.

Just need to keep your lipstick brush with you in your makeup bag along with the holder. (and a small mirror, which I know ULTA sells.  They are really cute square shape open up mirrors.  About 1 1/2" x 1 1/2".  Two mirrors inside.

Good luck.

Carole VonAllten