I've been playing around with this pattern for a few months in my sketch book. I got the idea from a piece of barn door hardware. If you can imagine the first row of the tangle below with holes in it for screws - that's the shape of the barn door hardware that I am referring to. As the pattern grew I realized it reminded me of the dried lotus pods used in flower arrangements more so than the barn door hardware.
I searched on google to see if anyone had developed a lotus pod type of tangle, and guess what? There is one which was created by the fantastic Margaret "Enthusiastic Artist", which she calls "lotus pods" - please do take a look at her wonderful version of lotus pods!
I call this version Nelumba (Nelumbo is a genus of aquatic plants commonly known as lotus....Wikipedia) - of course you could always draw the center holes smaller and think of barn door hardware instead!
Zentangle Inspired Art - using Nelumba
Well aquatic plants made me think of water fowl which made me think of ducks - they've been walking around the neighborhood this afternoon - so I added a couple of duck feet and a head to this zentangle! He's cute! Nelumba and the duck!