I had made some very wide binding that I had wound around that electrical cord keeper.  Turns out that I made several yards (meters/metres) more than I needed.  So I unfolded it & pressed it flat.  I had enough to make a border for all 4 sides of one Morning star block & 2 sides of another one.

Another failed attempt at posting a photo!
There is a border of sashing around the top now.
I think I will do 1 or 2 rows of HST's at the top and bottom using the 5 ins fabric and if enough bits a single row of small squares (HST) along the sides.
I can only try and hope I don't have to unpick

There are triangles in it!

I would just add another row of blocks - alternating the squares and triangle blocks.

OMG that is a stunner!

They're great, @Missie and I do like the no frills, or rather no unasked for and often rather twee labels or envelopes approach.