Entrelac Shawl needs a border!

Okay, we got this far finally.

Gretzsky likes it.

This shawl is made from a shrug that I finished and frogged.  The yarn is some walmart 1 ply synthetic, that has a big tendency to collect static and while the color transition really works well in this entrelac, it did not do the same in the shrug.
However, now I need a border and No, it won't be worm, i cord, piecrust.  It needs to be at least as wide as the blocks are: 9 stitches, and it will be knit as you go, so 2 rows for every stitch.  Probably plain stockinet around 15 rows ( to allow some curl and still have some width) would be just fine. Maybe 16 or 17 stitches with a needle or two out of work in the middle.   I'll let you know.
Here are some close ups of the purl side and the stockinet side.

There are also quite a few loose ends, mostly on the edges, so I will be able to take care of them as I do the border.
If someone needs the details, here they are:
Brother 260, tension 6.  (This technique will work on any midgauge or bulky, I am sure. )
The entrelac block is 9 stitches wide and 17 rows long.  Each new block is picked up from the side of a block on the row before.  If you have never done this technique, I recommend Dianne Sullivan's You Tube intro to Entrelac.
The foundation row of triangles to set up this project had to be done as three 72 stitch strips.  Once the foundation triangles are done, the first row of blocks links them together, and you are off- completing rows that are each one block shorter than the one before.  Each block takes (after all that practice!) around 3 minutes.

Entrelac is a great handknitting technique that can easily be adapted to many knitting devices.  You can, of course, use a flatbed knitting machine.  I'm pretty sure you can use a circular sock machine (getting a vision of how you could do that, and will report here with pics when I try it out.)  You can use knitting combs, all kinds of peg knitters and knitting looms.