Canvas

Canvas provides a freeform whiteboard style 'Canvas' area for your ideas to be visualized.  It's like a mini whiteboard in your pocket - draw like you do a real whiteboard and each idea you add is placed as a small card on the canvas that can be moved around, allowing you to play around and move your thoughts and ideas.   

Click + to create a new Whiteboard and then add one more ink cards using the ink input area at the bottom.

You can add as many blank Canvases as you like and use the drop-down at the top to navigate through them.  

Each of your Canvas 'ink' cards can be moved around like mini index cards.  You can set a card boundary color, and also even share your canvas a PNG image.