Those PCI-e covers are nice. I wonder where Gene got them?
I have a hub similar, if not identical, to the one Gene has. It's just a power distribution hub that works the same as a Y cable adapter but is more sanitary looking. The one I have is fed from one of the 12v pairs of a 4 pin Molex connector and has three 3 pin fan connectors. They are normally mounted using velcro tape but I'm mounting mine on nylon stand-offs since the hub will be mounted on a surface that will be covered with sound dampening foam. The stand-offs are also more rigid, making plugging and unplugging fan cables an easier one-handed operation; it will make connecting and disconnecting the side panel fan a lot easier. Here is a link
for several of them (the first 14 items on the page).