Brain, Meatballs, Subway sandwich, and Piano
The four × four drawing exercise from Lynda Barry is a variation on an Ivan Brunetti exercise. It goes something like this:
Select four things from a daily diary entry. They need to be neither too simple nor too complicated to draw.
Use a non-photo blue pencil and draw the objects in the first column, 45 seconds per drawing.
Draw the objects again, this time in a different order and from different perspectives in the other three columns. 45 seconds per drawing.
Spend some time and draw a frame around each, ink them in and add colour.