How to make diy pencil case, simple and easy to use?

Practice: Roll the used post-it note on the tip of the pencil, hold it on the head, and then wrap it with a little tape, and the pencil cap will be made. The finished product is as shown in the figure:

Other practices:

(Baidu Experience) Paper and Pen Cap DIY:/article/495ba841f56a2738b 30eded9d.html.