The scarf thing's still running away with me, so here's another couple of my favourites...
A pattern that I made two or three of this winter was the Hubby Approved Neckwarmer which first made its appearance in 2006, so how come I didn't hear about it till 2010? Anyway, it's a really simple rib neckwarmer - you can make it in an evening or two, with just one ball of wool. Sounding good so far? Well, what I also did was mess about a bit with the rib pattern and I used vintage buttons, or sometimes two buttons, and I made fingerless gloves to match, and...well, I just can't leave a good pattern alone. The design's by Danielle Landes and is on her Sheep Geek blog. I did try to post a link, but Blogger's not having it. (How come Blogger worked so much better before they made the improvements??)
Another really useful little scarf can be made from a hand-written cravat pattern that a lovely Welsh lady visitor to the shop sent me. I'm not sure I'm the cravat type, but it would look nice tucked into a smart, white shirt. (I'm not actually a smart, white shirt type either, but there are lots of people who are...)
Basically you start with two stitches, increasing gradually to 28, working straight for a bit, separating the stitches into two lots and working a few rows of 1x1 rib for a while on the two separate sets of stitches, then bringing them back onto the one needle. Work 13 inches of stocking stitch, then repeat the first few instructions but in reverse, (starting with dividing the stitches into 2 lots) so that you end up with 2 stitches, which you just cast off. Simple. I can't find the original of this pattern on ravelry but, if you recognise the idea behind it, let me know - I'm not trying to claim it as mine and will be happy to credit.
Here's what it looks like in Araucania Ranco: