Many people have Lego Mindstorms NXT Robotics Kit, including me. One of the problems is organizing all the parts. Some keep their parts in the box it comes in, but I dislike this for several reasons.
1. The box is too large.
2. It is made of cardboard, and can get beaten up very easily.
3. It has no way to keep it closed; if it spills over, you will have to search for an pick up all the parts again.
I use an old silver K'Nex box for storing my Mindstorms in.

This keeps it all together and can be shut securely.
Inside I have several small containers and bags for wires, tread links, etc.


This container is for the wires to connect the Motors and Sensors to the NXT brick.

There is also a USB cable in here for connecting to the computer to upload programs, a large grey piece, the backing for the battery compartment which is no longer used, a paper clip for resetting the NXT brick, and a card. This is for a security system I found on the NXTlog. I sometimes put small pieces of projects in here, due to the center of it being almost completely empty.
This bag is for the
tread links and sprockets I purchased from LEGOEducation.com.

They are $12 if you wish to buy them... I would suggest it, it's not a waste of money.
This small container is for miscellaneous parts; A Zamor Sphere launcher, cage, and 7 spheres, a couple of spring-loaded missiles, some official Lego rubber bands, and some small tires that are great for caster wheels.

Fallen asleep yet? If not, good. If so, please wake up! I'm not quite finished yet!
This is the transformer for my NXT brick's
Rechargeable Battery Pack. I simply put a rubber band around the cord and place it in the box.

Btw, if you check out the link, the second review from the top is mine.
This is my box after all the other "goodies" have been removed; I have no more organisation after this, I just try to put the NXT brick and motors on the top, if I can. I sometimes have half-built projects in here, too.

I'm done my post about organizing Mindstorms, although after I get my 2.0 set I am going to have to think of something else, because, as you can see, it is pretty crowded in here already.
"May the bricks be with you"
Nathan / Spacedude1234567