Amazon has this Double Layer Cosmetics Bag for $5.17 with FREE shipping.
I talked about using one of these as part of your Portable & Functional Makeup Station.
This one gets incredible reviews. I love that it has slots on the top flap for individual items, as well as a catch-all in the bottom.
Perfect for taking your makeup to the gym.
You can also still get a great deal on the Handbag or Makeup Organizer and Waterproof Makeup Pouches.
Pricing was current when the post was published, however Amazon prices change often, so please check before you buy.