My version of it is stitched on tea dyed fabric with "Wildflowers" by Caron in colour "bark". The squares are small and it goes fast so come on, have a go!
And if you don´t feel like sewing the 12 blocks, here is what you can make with one block. I was inspired by that to make this backpack.
I will show it to one of my quilt groups. It is easy to make and would look good with jeans as well I think. I sewed mine with furnishing fabric (just the right thing to make it a bit sturdier). The shoulder strap zipper is a nice feature too.
There is a pocket under the stitchery.