I found that listening to the Yarn Harlot audio book kept me amused and engaged and I got a huge amount done on a sweater mainly done in stockinette with some shaping for darts.
Getting up and doing a little housework can send me right back to my knitting as well.
"Never doubt that a small group of thoughtful, committed citizens can change the world. Indeed, it's the only thing that ever has."--Margaret Mead