I have put together a collection of my simple to knit and fun to wear (or gift) cowls.
They all use the simplest of colourwork techniques called Mosaic knitting. Each round works with only one colour at a time. Easy peasy!
For the matching hats ebook https://www.ravelry.com/patterns/sources/simply-hats
published in July 2020 by Mary-Ann Lammers
ravelry.com