What is something you learned recently that you were completely unaware of?

I was ready to buy a whole new ignitor for my gas grill because it would no click and turn the gas grill on. I had gas in the tank. The clicker wouldn’t click and I thought it needed a new ignitor. I went over it with my daughter having her help me find the right ignitor. I told her it was strange though because there was no noise and I thought if the ignitor wasn’t working it should still make a noise like my gas stove. Then my daughter looked it up and found underneath that rubber button is a double-A battery. I felt so stupid. I replaced it and it is working now. It looks like it’s attached firmly but apparently, it screws off.

The more I thought about it the more I realized that it does need a spark and that can only happen with power coming from somewhere, like a battery.

It had me wondering what else is out there that is often an easy fix that people may not be aware of and never really think to share.