Another easy four-patch block is Frayed Four-Patch.
This just has a four-patch unit in the centre and a border with cornerstones. You can download instructions to make the block here and visit the website if you need a quick refresher on making four-patch units.
Below are a few quilt ideas for putting these blocks together. First of all just 16 blocks (4 x 4) set together.
Then turn alternate blocks :
Or put them on point :
You could try colouring alternate blocks differently. Or what would these blocks look like with the Double Four-Patch block as an alternate?