Tile trackers are amazingly useful. I have a few at homes, and I use them all the time since I’m the kind of person who misplaces his stuff quite often. Tile has just released a new version with an adhesive back, the Tile Sticker, which comes with 3-year of battery life and 150 ft of range. They’re small, they’re waterproof, and they stick to anything! They’re also compatible with Alexa now!