I didn’t really have a good place to put these links, so they get their own Miscellaneous section.
Title: Seventh Sanctum - Your source for generators.
Notes: There are a lot of character/situation/location/etc. generators on this site, and they can be a great starting-off point for a brainstorm if you’re looking for a bit of random inspiration.
Title: Seventh Sanctum - Magical Girl Generator
Notes: Generates a random physical description of a magical girl character.
Title: Cryptozoology.com
Notes: Random inspiration from unproven animals.
Title: Exit Mundi - End of the World Scenarios
Notes: Good for plot or history inspiration.
Title: Online Conversions
Notes: It’s always a good idea to keep height, weight, and other units of measurement as universal as possible, so everyone can understand what you mean. This can convert measurements for you.
Title: The Internet Encyclopedia of Philosophy
Notes: Huge database of philosophy and all things related. Great for inspiration when it comes to trying new ways of how your character might think, but it could have a thousand other uses as well.
Title: National Novel Writing Month
Notes: Take a look around their website, particularly the forums around November. There is almost always a thread of interest, and the people there are extremely helpful when it comes to creative inspiration and creating depth to your characters and plot. Or just achieving filler, but that's half the point of NaNoWriMo.