I made a great scarf for my DBF using a k2p2 (or k4p4... I can't remember) rib. Cast on a multiple of 4 (or 8) stiches... 24 is good. I also made it a keyhole scarf so one end of it sticks through the hole. To do this, work about 8" in the ribbing, then work one row only halfway. Put the second half of the stitches on a stitch holder or waste yarn. Continue working the first half of your stiches in the ribbing for about 3-4 inches. place these on a stitch holder now, and cut the yarn (leaving an end long enough to join/weave in easily). No go back and start again with those stitches on the first stich holder and work until the two halves are even. Now, work in pattern across the full width of the scarf, off the needle from the half you've just finished working and then off the original half still left on the stitch marker.
Continue working in pattern until it "fits": When you put it on and stick the working end through (or over) the keyhole, it looks even. This scarf isn't very long because it doesn't have to wrap around and around your neck.
It's a combination of two of the scarves from Stich 'n Bitch.
I really like it. I made it using Wool-Ease Chunky in Chestnut.