This is a pattern I stumbled upon while trying out Exis by Jennifer Hohensteiner (as featured on TanglePatterns.com . Her pattern calls for filling a grid with alternating "high-slung" and "low-slung" X's...so of course I flubbed up and made them all the same. After some playing around, I came up with this.
TINY DISCLAIMER: As always, if this pattern is already out there in the world, just let me know.
Here's the step-out:
Here's one possible variation:
And here's a tangle using the pattern: