I just keep my everyday make up/ect in a roll bag, my brushes are kept in a glass vase with some rocks on the bottom and the rest I bought a 3 drawer plastic container at Walmart for $10
Always look at TJ Maxx, Ross, Marshall's, and/or HomeGoods in the beauty section and also in the home and bathroom sections. I've seen several acrylic organizers there for a fraction of the price. And to keep them looking new, get the acrylic and plastic 3-step cleaner and polish from The Container Store.