An AirTag for my wife’s cat, along with a collar holder. She’s an indoor cat but REALLY wants to get out. We got it after reports of coyotes roaming around and attacking small pets.
One time she darted out a sliding door window, we tried to track her down. Went all over the house, then outside. Ended up driving all over the neighborhood. Nothing. Turned out the whole time she was hiding under a car, 20ft from where she got out.