I have started a list of all arduino projects: http://duinoaday.wordpress.com/2010/05/19/help-needed-with-mammoth-task/
I need all your help to fill it up. Please take a few seconds to submit a project link and then I can fill it up much faster. I am working through all the ones on hackaday and I will search this forum after that but any help would make the job much easier! It will benefit everyone when finished as you will know where to find a link to any type of project and you can check how other people did stuff/if it's been done before...
Page of projects and where to submit links: http://www.duinoaday.co.uk/projects.html Scroll down to the bottom for the quick submission form!