First thing I did was completely empty it out and gave it a good scrub down. I was about to paint the inside of it on a whim, but naps aren't THAT long, and you have to draw the line somewhere.
I tossed things that were old and things that were just never going to be used. I broke out my label maker and began sorting.
I separated everything into categories and put a label on the wall behind each "section." I find that labels help our family remember to put things where they belong rather than just toss them somewhere.
I must have opened it about 20 times since then, just to look inside! Now I can check one thing off the list!