I used to spend hours arranging my barbies, and stuffed toys in rows. I would take my line down again, and make a new rule for the order, and begin a new line. The order might be by animal type, alphabetical, color, or even by most favorite to least. I LOVED playing 'store' and would spend hours arranging all the 'merchandise' in my store. I even made little price tags, and and sales receipts. I spent 10 times longer setting up my store, than actually playing with it. I mostly liked playing with my brother, because he had to play my way. I didn't have so much control over other children. I wasn't very nice to my brother, and would often smack (I'm embarrassed to admit that!) him when he didn't obey my rules.
Now, I do this with adult things.