I got to wondering, after reading some of xolroc's work, about how one would become modular.
In a more technical, sci-fi based world, the only way would be to go cyborg or android. Digitize your brain. But the twist is to do it a-la Discworld. Do it like fantasy, magic and such.
This is my first attempt.
Link
blufawx
Interesting read, that's for sure.