For something I did because I couldn't figure out how to pull of my original idea, I'm really happy with the way that Christopher turned out. I didn't make this top to go with a particular backing fabric, but there was a novelty print in my stash that worked perfectly.
Want to make your own? The block finishes at 30" square and I added 2" borders to each side of mine to bring the finished quilt up to 34".
By my math, you'll need less than 3/4 yard each of white and green. That may vary depending on how you cut your triangles.
6 - 6 1/2" green squares
4 - 2 1/2 x 6 1/2" green strips
20 - 2 1/2" green squares
8 -- 2 1/2 x 6 1/2" white strips
16 - 2 1/2" white squares
You'll need to cut pieces for twelve 6" finished half square triangle units using your favorite method. I cut half square triangles from 6 1/2" strips of fabric using my Easy Angle ruler. Or you could cut six 6 7/8" squares each from white and green and cut them in half diagonally.
Make four nine-patch blocks, four rail fence blocks, and twelve half square triangle units.
Assemble as shown.
Add 2 1/2" white border strips to all four sides, quilt and bind.
There's a list of my free baby quilt tutorials over in the sidebar and you can find out when new ones are added by either following my blog or liking the Let's Make Baby Quilts Facebook page.