Tile - Track your lost items
PINGTAG - The emergency contact QR tags for your car and personal items
Wistiki - Locate lost items with location tags
AirTag - Apple's answer to Tile, for finding your devices
Clap To Find My Phone - Clap To Find My Phone is a free-to-use app through which you can precisely discover your cell phones and tablets just by clapping.
FoundIt! - Keep your things safe with self-printed QR codes