nodes connected by black lines, could leave it is it is for simplicity, incorporating it into a sleeve portion; alternatively have it as a sleeve/calf with the spaces coloured very brightly. Candidate for tangle pattern?
Brick pavers make a simple, handsome border and work well as edging material. They're ideal for a wide border that keeps grass out of the garden, yet allows flowers etc. to spill over without intruding onto the grass.