I picked up this cute organizer from ELF and I LOVE it! It's basically comprised of two parts held together magnetically. (Don't worry, the magnets are quite strong!) The main compartment in the centre holds a decent amount of makeup, plenty of room to pack essentials for travel. The outer part has some very handy spaces for brushes and a net compartment to pack any extras.
This is a great buy - definitely the best cosmetic organiser of this size that I've seen, and excellent value for money too.