The two crossword solutions for the term 'Cartoonist Tool' are ARNO and NAST. ARNO is a reference to the French cartoonist and painter, Arnoldo de la Rocha, who was known for his satirical cartoons in the late 19th century. Nast is a reference to Thomas Nast, an American cartoonist and illustrator who was active in the late 19th century and is credited with creating the modern version of Santa Claus. Both of these cartoonists used various tools to create their works, such as pens, pencils, and paints.