I attempted the notecard outlining trick, but I have kids, so most of my notecards ended up missing and/or scribbled on.

This site was offered to me and I've been using it ever since. I'm including a link to a recent WIP to show how I used it in the past (This is actually the story I'll be Prepping, but it's vastly different now, so starting from scratch):

http://linoit.com/users/SarahRae/canvases/UnBlessed%20Outline

The beauty is there are 10 different post it colors, so the organizing possibilities are endless. You can also upload pictures (I intend to find pictures that most resemble my characters and pin those right next to the character descrips). Or you can upload floorplans/maps of settings, anything inspirational...