So you just finished going around your house and changed all the clocks. But did you change all the batteries in your smoke detectors?
Since you probably didn't, when you go through your house again, take a look at when the last time you replaced the smoke detector itself. If it has been more than 10 years, you might consider replacing them.
While walking around the house, make sure external lights are all working and your sidewalks are clear. Also check under the sink and in your garage and make sure chemicals are out of reach to children. The same is true for medications. If it is expired, why keep it?
Make sure you properly dispose of items that you no longer need.