The old-fashioned to-do list has served us well, sure, but this is 2010 and we've embraced the third dimension where two were once adequate. Sometimes that just means really expensive movie tickets, but in this case, it mean stackable productivity.
The Daily Stack concept helps individuals manage their workflow by stacking wooden blocks - there are different colours for different tasks and different sizes for how long those tasks are expected to take.
It's certainly a nice-looking way to visualise all the work you have to do - if you have some sense of the order in which you want to get your various tasks done. Otherwise, your to-do tower becomes to-do Jenga [Designboom]