Crochet grille stitch diagram that has a kinda sorta jacquard'y look to it. I may be reading it wrong but looks like you just keep reversing how two basic stitches sit over top of each other throughout the pattern.
poncho Simple crochet wrap: Pattern for sale. finished size is 15 wide by long. Crochet rectangle then add the extra inches in another stitch going in other direction for several inches until finished length.( 14 in or so)