Found this little tip on the internet so i tried it out and loved it! thought i'd pass it on.
take an old phone book and put it on your taboret. when you want to clean the knife or brush use the top page. when the page is full tear it off. the paper in a phone book is extremely absorbent so it soaks in the dirty thinner out of the brush like a sponge. you can even clean the palette with it.
this saves tons of paper towels and the time it takes to tear them off the roll every few color changes. not to mention recycling old phone books.
i'll paint even faster now!