Time saving tip

I'm reading Clear the Clutter - Make Space for your Life, by Inge van der Ploeg which I found in my library. It's got a lot of time-saving tips which I'm liking so far.

One time-saving tip I've come across that I'm going to start doing is compiling my shopping list of my regular items on my computer arranged by the order of the aisles that I go by in the store. I can print off several copies and cross off the items that I don't need that week. Saves me having to compile a list from scratch each time.