Everyone is creative, but creativity itself is over-rated. Doing is when things really start happening.
These activities are made to help you in getting started creating. Why not try a tool format you haven't tried before? What if your work was presented as a "Sound story" or interactive narrative game?
Each activity contains "inspirations" for you to go and explore and think about. There are "resources", where you can get the media you need. And there are the relevant "tools" for you to get your hands dirty with making something.
And of course, don't forget good old analog work. During Digital Creativity Week we give out sketchbooks and craft materials - it really doesn't matter what you're using, as long as you are having fun making things.