I'm messy, but organized with parts and tools in the middle of a project. The problem is that there are always so many projects going on at the same times, in various stages of completion due to a variety of factors, from time, money, motivation and waiting on parts. Things tend to get a bit cluttered at times, but I generally know where everything is, and what it needs to get finished. Unless somebody moves something.....
One of my favourite times though, is when a bunch of projects get done, and it's cleanup time, and I get to start putting stuff away where it belongs. I've been on a big project finishing kick lately as I'm finally getting some more free time, and it's highly motivating to start crossing stuff off "the list" and cleaning it all up. It's a snowball effect.