Throughout the week, I keep a grocery list on the side of my fridge, writing items down as I run out of them. But just before I head to the grocery store, I re-write my list, organizing it according to where I will find it in the store I will be shopping. This helps me not to miss anything I really need, or have to run back to the opposite side of Wal-Mart to scramble for something I have forgotten. It's wonderful for sending, say husbands, to the store too. This way they don't disappear for hours, wandering around a Wal-Mart, looking for an items in completely the wrong section. This has proven to be a huge time saver for our family!