This is the kawaii cup that I store my used brushes in. I bought this at Chinatown in Chicago where they sell Hello Kitty and other popular kawaii characters like Kerropi, Pikachu, etc.
The new method I use to wash my brushes contains a plastic container, rag, and your preferred brush soap. I squeeze some of the soap in the container and add a little water to it. Then, I lay the towel over it and use one hand to hold down the rag to the container. After that, I swipe the brush in the direction away from where I am holding it so that it keeps the rag taught and it helps to, in a sense, exfoliate my brush (take off the colors.) Effective but disgusting.
HOW DO YOU WASH YOUR BRUSHES? PLEASE SHARE BELOW.