Magpie is a tiny GPS tracker for kids, dogs, or luggage that will work anywhere in the world

Magpie is a new device with a simple goal: to help you find the things you lost. The GPS tracker is only about an inch in diameter and syncs with an Android or iOS app. It's waterproof, and it can be attached to everyday items — like keys, wallets, or laptops — or to a pet's collar or child's …