I recently made a quickie easy quilt top using a Layer cake (10 inch squares). But you could easily use your fat quarters if you want to use this pattern. I just cut off 3 inches from each square, and then did a mix and match with the 2 sizes and colors of fabric. You would have 3x10 and 7x10 rectangles. Now sew together, one of each size in different color fabrics using 1/4" seams.
Now put together a row of these blocks, with narrow rectangle all to the left side of the block. Next row put all af them to the right side of the block. Alternate rows of each kind to make the size quilt you want. I made mine 6 blocks wide and 7 blocks vertical, for a throw size. All blocks will be in a vertical position.
I think every pattern should have a name, even if they are super simple, so I called this one "Simple Simon".
There! It took me longer to type the instructions than to make a block! And the quilt looks nicer than it sounds.