furnace, ac, water or fridge filter. Since this is often forgotten now is the perfect time to get in the habit to remember these two times a year.
Interesting DST Fact: Ben Franklin had mentioned this idea in 1784, but wasn't implemented until 1895 when George Vernon Hudson proposed it during WW1, and wasn't practiced in the states until after WW2. And people tend to be healthier during this time of year!
Daylight saving time can not only be extended light in the evenings for you, it can be your reminder to change those filters in your home.