Storage is key! Whether it's storage bins, drawers, baskets, you name it, having designated places to store your crafts will definitely help control the clutter.
I also scored this amazing find at Walmart for only $30! It stores all my washi tape, Smash Book items, tissue paper, baker's twine, and so much more! I also keep a filing system on top to keep track of all my business expenses and receipts (a great help when tax time comes around).
My other tip for staying organized is make use of your space. My craft room is not very large, as seen in the picture below...
So I definitely take advantage of all my storage containers. I'm thinking of hanging shelves on the walls in order to make more use of the vertical space in this room, since the floor space is pretty much maxed out.
*update* we've since hung up a pretty nifty storage rack that we found at Ikea. Can't wait to share pics with you all!