I've fallen in love with this pattern for men's scarves. Yes, it's a mindless repeat of two rows but the result is great and with Xmas coming it's fast!
Row 1 K3, P3
Row 2 K1, P1
I've done two in Bernat Natural Blends verigated yarn- medium weight. I used two strands and #15 needles with 21 stitches- but I'm sure it will do fine with any combo you choose.
Here is a link to the orignal pattern site. Scroll to the bottom for "Sinful" Ribbed Scarf. The picture does not do justice to the finished scarf.