My best organization solution is 3M Command Hooks. I use them everywhere. They make some nice brushed metal ones that I use on the back of my front door and they are super stong. I have one for the keys so as soon as we come in the keys are put there. I also have 4 low ones that I put the kids jackets on. That way they can do it themselves and my entrance way stays more organized.
I thought of another something that's handy around here. I keep a small (very small, the smallest one I could find at the discount store) tool box in my kitchen with all the basic tools - needle nose pliers, small hammer, two screwdrivers (one Phillips, one flat), some small nails, a few picture hangers, some wall anchors, a putty knife and a small tub of spackle, a measuring tape, and a level. For 98% of the jobs I do around the house, everything I need is in my handy little toolbox and I don't have to trek to the garage, find the keys to my DP's massive tool boxes, figure out where everything is, and return it all when I'm done.
I'm glad several people like the stray sock bulletin board idea.