As a Graphic Designer and Logo Designer, I wanted to share this great hidden tool in illustrator that allows you to "fill" in shapes in your vector artwork. This is great for designing logos so you can "fill" gaps in your shapes to colorize and play with them. I used to use this tool a lot back in the days of Adobe Flash, when creating shapes for animation. I'm glad they have it in Illustrator! It's an invaluable design tool.
This hidden tool is found under the "Shape Builder Tool" that is on the left side of the Tool menu, the 9th one down (Shape builder looks like two circles with an arrow over them). See screenshot below or watch the video above.