Kleon offers in this chapter some suggestions to keep one’s creative mind alert. While one’s studio may be messy and attract all sorts of clutter, it’s best as he suggests to do a bit of “tidying up.” When things are out of their place, one may not be able to find what they need to use, and delay any art making. He is not equating order with efficiency. He’s order as a place of readiness, as there is a balance between chaos and order. If one finds themselves procrastinating about doing any artwork, he suggests a quick tidy of one’s studio. And in doing so, opens one’s mind for exploring the materials one might have to use. Tidying is not about having perfect order, but a form of play.
I encourage you to buy a copy of Keep Going for a better understanding of your own creative process. Whether you're a master artist or beginning artist, this is an excellent book.