I was working on this ZIA for a couple of weeks. The general outline idea came from a knotted zentangle I saw online (sorry I didn't the name to pass on credit). There are three interwoven pieces; one with three tangles, one with four, and one with six. I was experimenting and practicing with tangles that are good for borders, though there are three tangles that I've seen but don't have names for. I'm quite happy with this!