This mod, which technically isn't my first but is the first I'll release, takes every standard creature and makes it a power, each with a few (hopefully) sensible sphere(s) associated with them. Every sphere is covered at least once. I did this because I wanted a more totem-like religion for my lumani (wolf-furry things) race, but I liked it so much that I gave every default power in my own game [ANY_APPROPRIATE_POWER] and all sphere tags (included in a handy-dandy file in the zip).
This is more involved than it may first appear. For instance, in early testing, I discovered that vermin as powers make the game crash, as they have no body but they're still marked as opponents (I believe). As such, vermin powers get a very basic body.
Prodigious and clever use of find/replace made this mod - it would have been impossibly tedious without, as many tags had to be added/removed/changed. Stuff like aquatic powers not drowning immediately upon an adventure entering the map, and creatures with no default attack getting at least a smite attack (actually all of them do) so that they stand a chance during worldgen against the other powers. As such, the creature file is a bloody mess, with fragments of numbers and closing braces scattered everywhere, but it works fine, as far as I've tested.
I give full permission for anyone to use this mod in their own work. Note that this mod does nothing on its own - you have to add the sphere tags and [USE_ANY_APPROPRIATE_POWER] as the religion type to entries in entity_default.txt for it to work.
If you use this, let me know if there are any bugs and I'll try my best to update things.
http://dffd.wimbli.com/file.php?id=824