Interlocking Moebius Strips
If you take a strip, give it a half twist, and connect it to itself, you get a Moebius strip — a surface that has no sides. You can keep walking on a moebius strip, walk the entire length of it, and wind up back where you started. I took 6 and interlocked them in two sets of three. For the texture, I played around with Voronoi fed into a color ramp with several different stops. For the background, I used stripes and a gradient combined for an interesting effect.