It's a piece of hand-dyed cotton that I've been wondering what to do with for ages. Those oval shapes are trellis stitch on a foundation of buttonhole. I did a bit more last night, but it's quite a big piece of cloth and there's still a fair amount to do, so not ready for while. Once it's done, I should have a nice list of stitches to get me going!
UPDATE: life and motivation in general intervened and I didn't get this finished, or manage to start on TAST15. However, I've found more time now and I'm recycling it for another project. More later.