Using these key charms is super easy. You can attach them to your keys by hooking the key ring through your keychain. Or, use the clip to attach them to your bag or backpack. They can also be displayed as a cute little toy. When it comes to maintenance, just keep them away from sharp objects to avoid scratches. If they get dirty, you can gently wipe them with a soft cloth. Remember, the color of the charm you receive is random, so it's like a little surprise!