I'm convinced that I'm an organized person living inside a disorganized person's body.
So, any time that I try a new organizational method that works I'm always so pleased. From an amazing 3rd grade teacher at my school, I learned a simple, but easy method that has worked really well for me. She has several tubs on one of her shelves, each labelled with a different subject area. She puts books, notes, copies, lesson plans, anything that fits that subject area that she's currently teaching, it goes in that tub.
For me? Perfect. I hauled out four brightly colored (this is important) containers, labeled them with pretty fonts (again, very important) and stuck them on my windowsill. It's been... well, almost magical, to be honest.
You see, I suffer from the "oh, mother of crap, I just had it in my hand, where in the *^#@%$ h#@%$ did I put it?" disease. But this -- this is helping! Now, everything just goes into those buckets and I can always find it.
(note: the coffee pot. Also very important.) This is right behind our math shelf, so it blends with kid tools as well.
This is where I keep my plan book and the stack of file trays that only live there because I haven't figured out a better method of organizing those papers yet.
I imagine I'll need to sit down and cull the contents of the buckets every few weeks or so, but that actually doesn't sound like too much work.