Most of my stuff is stored in Creative Memories organizers (since I sell CM). I have to admit that I am not as organized as I would like to be.
My 12x12 papers are stored in these. I put them in there by groups. I put the paper I would use as my background and all the coordinating pieces for decorations. I put any stickers or extras in the small pocket. I tend to buy paper with a specific album page in mind, so this works for me. I also have an old organizer that was made for these to go into for storage/carrying around.
12-inch DecoFile™ Folders
I have these for storing my pens, adhesives, scissors, shape makers and any other small things.
Vintage Memory Mate™ Case
I have to admit that most of the things that I want to go into albums for the boys are not really organized at all. Keegan's stuff is in a laundry basket and Truitt's stuff is stacked on my guest bed.