I'm a working mother, and time is at a premium at the best of times. I'm also a list junkie - I've got a hardware-store list, a grocery list, a department-store (Target/Walmart) list, and a Costco list. Not to mention my general to-do lists (home and work).

There have been many times when I'd get home from Target and look at my grocery list, only to realize that I could have picked up the essentials (diapers, milk) at Target. But noooo, now I'd have to make a separate trip.

It happened one time too often, and finally I'd had enough

I set up a series of SmartLists - hardware, grocery, department, costco. They're all set to show items from a third "master" list that are tagged with the corresponding SmartList name(s) and "need". So now, batteries, diapers, etc. are tagged with all of the places they can be bought, along with "need".

This way, all my shopping lists are cross-referenced, and I'm running fewer errands - I'm saving time, fuel and my remaining sanity.