Well, after more than 3 hours untangling, labelling, wrapping, and zip tieing extension cords, I was pretty frustrated. I remembered an old friend used to wrap them kind of funny to avoid messy tangles. So, to the internet I went...I googled "how to wrap an extension cord."
So, here's a few of the dozen videos which explain in detail how to wrap an extension cord.
By the way, one of my all-time favorite youtube videos is "how to tie your shoe lace in one second." Check it out too.