Sometimes we need a quick burst of productivity to get ourselves going. Your teapot or coffee maker can make for an excellent incentive-based timer.
If there's something tedious, boring, or that you just don't want to do and you can do it quickly, you really only need a few minutes to focus. Nonetheless it's hard to find that focus when you're completely disinterested. To help you get to that point, start boiling some water on the stove or start a pot of coffee. Next, sit down and tell yourself that you need to finish this task before the tea or coffee is finished and that you do not get your tea or coffee until you've completed it. The tea or coffee provides an incentive that you wouldn't otherwise have. While it's a bit artificial, making your crappy work a game can be a big help.
Another variation: See how many emails you can read/sort/respond to in the time it takes for the teapot to whistle. Try to beat your score each time. I always find these short sprint "games" useful when I need to get something done quickly, especially when I have a score to beat.