You can write.
You can draw.
You can write and draw.
You can write poems.
You can start a chain. Write a poem and abandon the notebook for someone else to find.
You can do the same but explaining something about yourself instead.
You can write down your dreams.
You cvan use it as a blacklist.
You can use it even a table.
You can start a bonfire.
Also, you can use it for any other reason.
21 x 15 cm