I have two set of keys and one of them I use it as a spare in case I locked myself out of the house or car.
1. had a heart shape along with house, car and alarm pad.
2. had purple key holder so easy to access when I go somewhere and putting it on my pant instead of my purse where you cant find it. it had a house, car and my bedroom door.
Will add more key later once my house is done remodeling.