Elf changed everyone's contact names in your phone

About this idea

The sneaky elf has been busy on someone's unlocked phone! Swap a few contacts in a spare or old device (or use paper cutouts as 'evidence') — Mom is now 'Supreme Overlord 👑', Dad is 'WiFi Password Guy 📡', and the tween is saved as 'The Chosen One 🧝'. Leave the elf posed smugly next to a handwritten 'log' of all the 'improvements' it made, plus a sticky note: 'You're welcome. —Management.'