beginner project ideas

Hi everyone, I've been playing around with the Arduino starter kit with the Duemillanove, and I think I'm pretty familiar with the code and the hardware. What are some good beginner projects I can try out?

Thanks, Eric

Do some of these:

http://earthshinedesign.co.uk/ASKManual/Site/ASKManual.html

http://www.arduino.cc/playground/Projects/Ideas#Easy :)