All of this is so true. I don't think anybody else but people on the DIS will ever understand why we do these things!
For me, every time I go to the store (many times weekly), I walk slowly through each aisle thinking to myself, "Which of these things should I take to Disney?" and soon I end up with a cart full of stuff to find room in the suitcases for!
I have been to Target 3x this week and probably will go at least 2 more times next week before we leave next saturday just for disney stuff!