I added a HST border to a round robin I'm participating in with a group of Sunshine ladies. For the HSTs I raided my 3.5 inch scrap bin for pieces close to the colors of that striped fabric. And in the scrap chunk bin I found a piece of gray/black/white I could use. Now it goes on to Maine for the next round.
In case you are not familiar with Sunshine Online Quilt Guild we are a group of charity quilters that support both Quilts Beyond Borders and Wrap-a-Smile, a Rotaplast partner.
And speaking of Rotaplast...I was delighted to spot this quilt I made in 2015 on a little one after surgery in Arusha Tanzania. See the fourth photo down in the blog post. You can mostly only see the light green backing; however, I spotted the tree fabric in the top border and knew instantly it was a quilt I made.