When my first child was a baby, I used to sometimes give him my car keys to play with while buckling him in the car seat. But one day after buckling him in, I walked over to my car door and just before opening it heard the familiar "beep" of the car alarm. I had accidentally left the car keys in the hands of my baby and my baby had locked me out of the car. Before total panic could set it, my baby pushed another button and unlocked the doors. Needless to say, after that experience, I never again let him play with my car keys.
Even if you are no where near your car, you should avoid letting small children play with your keys because
household keys often contain lead and little kids love to put keys in their mouths.
But recently I was thinking about how my current baby is always trying to grab my keys out of my hand. And why not? Keys are fun. That's why there are about 100 varieties of plastic toy keys for sale. I once owned a set of colorful #5 plastic toy keys, but I have long since purged all plastic infant toys from my house. And so I thought, I should get her some wood keys.