If you only have five or ten minutes what you can draw? Here is my drawing. A sharpie is enough.
You can draw all kinds of cartoon faces in this way.
如果你只有五到十分钟空闲，可以画点什么？今天我画了一些卡通头像。
用sharpie画出数个连着的n，我的sketch book允许我画出三排，每一个n都可以填入一个你设计的卡通头像。简单，又可以大开脑洞。有兴趣的朋友可以试试。