Have you seen the new brush cleaning glove by Sigma? While it is intriguing, it is expensive ($40), and is not a necessity. Although, it IS a necessity to clean your makeup brushes, you can do so easily with your hands.
I never would consider buying this glove, but I would consider making my own “dupe” for it! I was inspired by this youtube video from Secretlifeofabionerd:
Here is how my “cleaning tablet” turned out:
I hung mine right on the door of the cabinet under the sink where I like to wash my brushes. To wash them, I use baby shampoo, because of its gentle formula.