I am an artist and I paint pictures. Every day I need to clean brushes - so first I use three jars with a special solvent for painting media - the first one used to be the third one, now it is heavily soiled and helps to wash the first layer of paint from the brush - this is my first recycling ;-) Old clothes also help in cleaning the brushes. I usually wear them for a very long time, and when they can no longer be repaired, I cut them into brush rags. I really need a lot of them, but I've never had to buy something special to clean brushes, there's always something recycled. Understood 90%.
Thanks for the lesson! Some things that I reuse are taketout containers. Some of the more sturdy ones make good containers for lunches and can be easily washed and reused.