Is there something like a scribble tool in draw.io? Like a brush tool or freehand drawing tool? I use the whiteboard feature a lot but like to transform my scribbles into diagrams!
Yes, there is a freehand or brush tool in draw.io for Confluence! Please take a look at this blog article which explains how to use it and gives you more great ideas how to transit from scribbles to a diagram with draw.io.
Fore more general info on draw.io for Confluence or Jira, please refer to our draw.io webpage.