I'm a Wikipedian, but I'll add things to the other MediaWiki projects whenever I can.
Articles I created
I copy things from Wikipedia:VfD when the general consensus is to transwiki them to Wikisource. Here's what I've added so far (I haven't cleaned any of these up):
These are pages that I didn't simply copy and paste from the Wikipedia:
Articles I significantly changed
Articles of interest
As usual, here are links to articles that I visit frequently or semifrequently:
These pages will need modification at some point in the future:
Administrative pages in the Wikisource namespace
I'll eventually add these to Wikisource:Help (and turn the page into a sort of FAQ).