I have a terrible sense of direction. I mean, really terrible. I use my GPS to get just about everywhere, but I recently discovered a new tool that has saved me lots of time and gas money: online trip planners. You can type in each address you need to visit and it automatically finds the most efficient route. In this season of errands and shopping, a trip planner can save you lots of time and CO2 emissions. Try Google Maps or Mapquest Route Planner to find the shortest distance between two, three, four or more points. If you want to save paper and get directions on your smartphone, you can download mobile apps for these services, too.