You never know when the media might come knocking at your door and there's nothing worse than having to drop everything and create some basic media material. So make like a boy scout [or a girl guide] and be prepared.

Your media kit should have:

• A backgrounder about your organisation, your event or yourself [depending on whose media kit this is]

What is a backgrounder? A backgrounder is an information sheet that you should send out to all media sources along with your news releases, press conference invitations, feature stories and other approaches.

• A logo - think about where this might be used [many online spaces crop images square so bear that in mind].
• Some photos - headshots of people in your organisation, event or project. This should be hi-res for print and also web sized images. Again, think of how they might look cropped.
• Bios of the people involved in your organisation, event or project. These should not be cvs, which are likely to be ignored by media and this is not a job application.
• Also prepare moving image and sound files [especially for online, TV and radio].

Consider how you might share this information with the media - in dedicated section on your site, via dropbox or through email.

Do all this and keep it up to date - then you'll truly be prepared.