- White blank paper (several sheets)
- One ink pen or pencil and sharpener
- One coloring book with simple pictures
Take your pick of the contents of the coloring book to be your 'subject', choose one picture. You can also use a cartoon printout from your computer. Animals identify with nearly everyone, so the advice here is to pick an animal subject, however any living mammal will work.
After you have selected your subject, use the head only and begin to practice drawing just that head until you become relatively good at it. Take your time and practice for as long as it takes.
Once you are comfortable with drawing the head, continue to sketch it but turn the head slightly in each sketch. Do this 'sketchercise' repeatedly until your hand and eye coordination gets "it".
The finishing 'sketchercises' are the same. Keep turning the head, in your sketches. This way, that way, up, down; how about a view of the head from the side? Profile the practice head, draw it from behind, or any other position you choose.
With enough practice, you will be able to pick a joke from a joke book, or your own collection of funny phrases and sketch your "favorite subject" into proper position to fit the joke. Hence, a cartoon, and one that took only the greatest expense, being "time". With enough sketchercising, you could become eventually, a professional cartoonist.