Sadly, I have been a vicitm of idea debt. As a young developer I had a grande vision of starting an online network of websites. I spent a solid month planning them all out, designing the logos and everything. Needless to say, when I showed the work to my boss he was less than impressed that I put off client work to plan our company's world domination.
I still have all the logos :) https://www.dropbox.com/s/7uxj41grx7s79mg/all-logos.jpg?dl=0