Well, turns out this design (an ouroboros twisted to form a Möbius loop, interlocked with two others into Borromean Rings) doesn’t really exist on the internet as far as I can tell. I can find ouroboros as Möbius loop, and I can find ouroboros arranged as Borromean rings, but not all three. For a project I’m doing, I commissioned some!

I didn’t end up using them for what I was planning to, but I am now the rightsholder (as far as I can tell from Fiverr’s ToS? including a commercial add-on where applicable?), so I’m putting them on the web under a Creative Commons CC BY-NC 4.0 license – feel free to use as long as you credit where you got it (me, although I only claim to be the rightsholder and not the original artist) and don’t use it for commercial purposes. Beyond that, what you do with it is your business.