Yarn Red Heart - acrylic 198 g 364 yards (333 m)
I used approximately per 16 g of each colors (approximately 30 gr for each) – ivory, beige, light brown. You can use any left overs.

Or any yarn you desired to work with, and fitted hook. If yarn is thinner the scarf size will be smaller.
Crochet hook 3.5 – 4.5 mm
Scissors