I'd do a diagonal. Easy, quick and if you do the YOs before the 3rd stitch, it leaves a nice lace-type hole you can thread ribbon through and that really dresses them up! I did a yellow one for my granddaughter made from Bernat Baby Boucle double stranded with Caron Simply Soft... :inlove: It is gorgeous! The ribbon is long gone but she loves to nap under it, wrap her babydoll in it and generally snuggle up with it.
Basketweave is nice and easy, too. It just takes a tad longer.