Not really innovative indeed :P
This is the system I've used for the past year. I've got physical trays where I put in post-its. The problem with that is.. when I'm not at home, I can't remember all the tasks. So now I always have the trays with me virtually :)
A smartphone app would be cool! Then it should sync with desktop as well. I have to figure that one out, because I don't want to store your data on my server.
Thanks for the support!