After making multiple pairs of mittens as Christmas gifts, I seem to be stuck on them. They are as bad as socks, habit forming! At least I am using up all the orphan skeins of yarn left over from sweaters and getting a head start on next Christmas. Two pair are from a booklet by "Wool You Order" called "A Year of Mittens" - knit with worsted weight - very heavy and warm. The blue and white ones are "January", the red and white ones are "February".
Two pair are from Mary Ann Stephens, red and green pair is her "Chrysanthemum" mitten done in DK. This pattern is available on her web site at http://twostrands.wordpress.com/. The second pair is her "Camellia" mitten done in Dale Baby Ull and is available at http://www.kidsknits.com/. They are great fun to knit.