Many cartoonists use digital tools to draw their cartoons, though there are many that still use paper and pencil/pen that are later scanned. A cartoonist may accept commissioned work, or develop their own work to be sent out to publications. They may also work on full-length books or a series rather than individual cartoons. Some cartoonists turn comic strips in regularly for publication and are able to have some job security. Some publishing houses also keep cartoonists on staff to work in an office environment. Being a cartoonist demands high creativity, as there is pressure to create new and clever ideas consistently.