Using hand-drawn sketch diagrams is useful, as it suggests it's a draft, not a finished diagram. However, you can do all of this and more with powerpoint, it's

Using hand-drawn sketch diagrams is useful, as it suggests it's a draft, not a finished diagram. However, you can do all of this and more with powerpoint, it's my default sketching tool at the moment. More info: https://blog-insider.office.com/2019/07/03/sketchy-shapes-for-word-powerpoint-and-excel/ https://blog-insider.office.com/2019/07/03/sketchy-shapes-fo...