We have an assortment of these for use in our Roadtrek and also for suitcases when we fly:
http://www.amazon.com/s/ref=nb_sb_ss_i_1_5/182-4971988-8574127?url=search-alias%3Daps&field-keywords=ebags%20packing%20cubes&sprefix=ebags%2Caps%2C298
They really help to keep clothes orgnized, neat and folded. We actually took out the hanging rod in our RT closet,replaced it with shelves and use these things for our clothes. We have several in various sizes for trousers, shirts, blouses, etc.