I find fingerless mitts irresistible. And this pattern -- called Alternating Current -- from Knitting New Mittens & Gloves by Robin Melanson is perfect when I need a quick fix. Requiring only a minimal amount of focus, they're also a good project to work on while commuting or sitting through kids' sports' practices and games, music lessons, etc.
The pair shown here--knitted in a yarn called GGH Aspen from my stash -- took me only about one soccer practice and two guitar lessons to complete. The pattern also includes instructions for the rest of the hand (to make a traditional mitten) and for a removable cuff/bracelet for embellishment. I have another pair in chartreuse on the needles.