Right down to the wire is customary practice for me now, but this time I can barely see the wire in my rear-view mirror.  Literally every last piece is being utilised and I'm drafting in any extra bits and bobs that catch my eye too.  Blocks I tried and rejected are now a shoo-in for this quilt.  In fact, anything goes if it fills a bit more space.
Here are a few examples: this one has much bigger triangles from the mucky green fabric with the little rows of sprouts.  It's the one thing I still have a lot of, as it was only going into the black hst blocks.  
You can also see triangles pieced from two fabrics...
 here's another one of those...
I have lots of little hourglasses, as a consequence of cutting without reference to a ruler or any form of measurement.  I'm making them bigger, like this one
 or using them in groups, like here.
I'm rather enjoying the challenge.