I've been trying to limit travel expenses... my own and my companies... to see just how productive I can be whilst working from home. I have to say, it's going pretty well. I use the Pomodoro technique when I really have a lot to accomplish and I find that it's much easier to do whilst at home than it is in an office.
Don't get me wrong, it's great catching up with people and collaborating in real life, but when you are using a technique such as Pomodoro, you really need absolute control over your environment in order to limit distractions and potential interuptions.
If you haven't used Pomodoro, it's worth taking a look. It's far from complicated but it's very useful. Essentially it's about working in a very focused way on a single task for 25 minutes before taking a five minute break and then returning for another 25 minute stint. Repeat to fade...
There's more about it here... it was named after those tomato-shaped kitchen timers which, if you have one, you can easily set to use the technique. If you haven't, there are plenty of apps available across all platforms.