I couldn't resist, I stopped by Walmart yesterday and bought yarn to make the multidirectional scarf. I choose Red Heart Plush, which is a soft, plushy acrylic/nylon that comes in veregated colours. I have already finished 2 feet, this pattern moves so fast. I am a little dissapointed that the close colour repeats and plushiness of the yarn hide the diagonal pattern a lot. You can barely see it in the closeup photo:
Still it looks nice and feels really nice, and I think my mother-in-law will like it. I hope so!