I've started promoting my coat of arms designer.  (Still looking for a name I like better though.)

As I've said before, for players with a Knight type of character, this tool can be used to create that character's coat of arms.  GMs can create coats of arms for NPCs such as other knights, dukes, barons, kings, and even city-states or organizations.

But the audience is wider than just rpg players.  People can use it to create their own arms if they get into it or recreate an ancestor's.  Also, people in SCA or similar groups might like to create arms for their alter ego.

Take a look at the examples to see what's possible, then open the instructions in one tab/window and then open the software designer in another web browser window.

Main Page: http://www.inkwellideas.com/heraldry/
Examples: http://www.inkwellideas.com/heraldry/index.php?title=Examples
Instructions: http://www.inkwellideas.com/heraldry/index.php?title=Instructions
Design Software: http://www.inkwellideas.com/heraldry/index.php?title=Design_Software

Please send me feedback (links on the website) or post constructive criticism or positive reviews here.  Thanks!  I'm planning on adding to it and making improvements every week or so for a while yet.

That is really cool Joe.  I hope it makes you some revenue!