Now there is this Elon Musk Notebook that is perfect for your idea journal or any other notebook.
This notebook is a spiral notebook that comes in two version as there is a ruled and a graph paper version.
And then on the front of the notebook you can find a nice image of Elon Musk in a dark suit with his arms folded.
You can use this notebook for almost all you notes and maybe seeing Elon on the front will motivate you to change the world because he showed that anyone can make a huge difference.
Get your Elon Musk Notebook