Hi, everyone! As you all know,usually this boxes have plastic sections for pencils, markers and so on, but I did not like these sections, because some markers were done and I wanted to put new stuff there, happened like that, that not always new can fit into these areas. Sometimes they are bigger or smaller, so, I replaces with carton board and elastic bands, in this case, you can put anything you want. I just cut pieces, attached elastic where I thought it will be comfortable for me and here it is! I glued carton board.
I can put even more, now it takes less space, I would say flatter than before, so,I can put small album and pack of brushes for watercolor, when plastic sections were protruding to far.
If you want comfortable art box for your convenience, just replace plastic. I seen so many art boxes in a Goowill, also without plastic sections inside, so, you can make your profession stuff in order for cheap.