So I have been looking for the brush cleaning jar and for some reason I haven't found it!!! Bummer!!! So I decided to make my own by using a sponge and a glass jar that I previously used for my brushes!! So I made a step-by-step on how I went about doing this :D
The jar was $1
My so called "circle"
I made my homemade brush cleaning solution using enkore's recipe
So I just put the "circle" shape sponge into the jar and started cleaning