First Option: Donate it (as @cbanek and other have suggested)

Second Option: Put it on the wall near your door, and have it as a generic assistant. Put the days weather, your family calendar, time until next bus/train, news headlines, etc. on it. They should change at different periods of the day to give you time relevant information (e.g. I want to know the time until the next bus in the morning, but I don't care about this when I'm home in the evening).

Advanced: Have the webcam in the laptop detect when someone comes home using OpenCV or similar. Then, have that information accessible via an app (read: HTML5 webpage). That way, you should know when your kids come home in the afternoon and they forget to text you "I'm home safe". Or you can have it run a script when you come home like reading the latest news stories, reading emails, etc.

The combination of microphone, web camera, battery and screen in this make it perfect for this. Your other options are to use a tablet. You could also link to the Google/Microsoft voice recognition software to listen to your commands (e.g. add Milk to the shopping list).