While I'm talking about Grognardia, I should mention that Mr. Malizewski is compiling a role-playing game sourcebook, a collection of petty gods for D&D-like settings. The descriptions of them are entertaining and anyone can contribute. The submissions are due by December 31, 2010. Go here for the open call page. Here's a sample petty god.
This thing will pay in prestige only; it's going to be a free pdf compilation.