You can look at some of my open Perl works. There are also some book reviews I do now and then:
Other things include hacking on a screensaver for XScreenSaver, writing games and educational software for my kids on the OLPC XO, and random things with artificial intelligence.
All of this when I'm not too busy with my current job, or with my 2 kids.
From time to time, I tend to be on Perlmonks, use.perl, and try to do some Perl6 development. But the spare time is so low... :)