Alternate Lark’s Head Knot
This one may look harder than it is. Once you get going it is pretty easy and fun. Just think over, under, over OR under, over, under.
You can start on the left or right. Begin with a cord and work over, under and over as shown.
Repeat on other side. Work over, under, over and draw it up tight, then work under, over, under.
Alternate sides. I worked with the blue cord, then the green cord. Here is a chain of Alternating Lark’s Head knots.