a treasure hunt

Many years ago, my hubby's dad had a 'junk shop' (and recycling business).  When he closed shop, he loaded it all up into a box truck and a semi-truck trailer and parked it behind my brother-in-laws house.  Since then, he has passed away, and my BIL has decided to sell his house to downsize.....  So, as a family, we must all go through Ted's 'stuff'.  Not treasured family heirlooms, just his 'stuff'.  We have found a few treasures to keep for ourselves though (and garage-saled a TON of stuff as we unload boxes).  This was my find of the day on Sunday:

Vintage quilt blocks.   These are 18'' blocks and there are 10 of them and about a yard of the orange material.  The Dresdens are feed-sackish materials, but the orange is probably newer materials.   The orange is quite bright.  Wouldn't have been my choice, but the choice was already made, so I am going to 'go' with it :)

I will probably just make 9 of them into a quilt with wide sashing and orange cornerstones and a wide border matching the sashing.  Then, with the 10th block, I will probably make a pillow cover.

Any suggestions for the sashing color?  Thinking maybe a white with a small orange polka dot?

I also found a vintage sheet I was hoping to use as a backing, but after evaluating it after washing, I decided it should be cut up - the center is too worn to be used as a backing :(