I have tried lots of different sticker storage methods. Now I have a combination. First, I have a sticker binder. That's where I keep the tiny sticker squares and strips that might get lost in a folder. I also have a plastic box for file folders. I guess it's about half a cube and has a lid with a handle. My files are organized by theme, like -- alphabets, beach, babies, kids, christmas, halloween, DISNEY, girls, boys, vacation, friends, flowers, etc., etc. That way if I'm working on a project, I can pull out the folder that goes along with it.
I tend to scrap in stages -- first choosing a bunch of pictures; then picking colors, embellishments; next cropping; and finally putting them in the book and journaling. That way I don't have to take all my stuff with me to a crop.
Have fun!
MK