The question of the day is:
How do you store your WIPS and other projects you have kitted up?
After I did a online class, where my project was sent to me in a plastic envelope, I have been using those. I get them from the scrapbooking section of the craft store, they are usually about $1-$1.50. I know that is more expensive than Ziploc bags, but I can reuse them, they hold up well, and if I mess one up, then it's no big loss.
I was going to keep everything in the giant box of UFOs, but that has disappeared into the mess of the basement, so I have them pretty much everywhere. It's not a good system. I know that, but it works for me.