The Hexagonal instructions can be found at:
http://design.tutsplus.com/tutorials/how-to-create-a-blended-hexagonal-print-design-in-adobe-illustrator--vector-26021
Brush tool pattern.
Circular Patterns. Change colors if you would like to.
Another pattern:
Tutorial is here https://blog.spoongraphics.co.uk/tutorials/create-geometric-pattern-adobe-illustrator
Jumper Pattern
Tutorial can be found herehttps://blog.spoongraphics.co.uk/videos/video-tutorial-christmas-jumper-pattern-illustrator
Jumper Pattern
Tutorial can be found herehttps://blog.spoongraphics.co.uk/videos/video-tutorial-christmas-jumper-pattern-illustrator
https://veerle.duoh.com/design/create-a-cubical-pattern-in-adobe-illustrator