Hi!
I'm a "9 to 6" web developer in a telecom, and i'm also rolling with a nice WEB 2.0 personal project at home.
The only way i found to get motivation to keep developing at home after all those boring 8 hours is smoking some weed.
And what you said about "different perspectives" is completely right.
Sometimes i drink some wine, but just a glass, more can make me sleepy and disturbed.