Bluetooth alarm trackers are see-through ornaments, like a keychain, that you put on the same ring as your car keys, and you can easily connect it to your phone.

It will help you to find your car key when you lose it, but it comes with a catch: do not lose your phone too, then you need to call an auto locksmith to help you.  These trackers are pretty ornaments, disguised hardware that is absolutely vital in the modern age, that come in a variety of shapes, colours and sizes, so you can choose a design you are comfortable with.