Remember that CDs are NOT indestructible. They are resistant to normal stresses, such as the occasional scratch or dust build-up, but they can be easily broken by intentional bending or accidental crushing. Never allow children to play with your valuable CDs. Children are experimental by nature, and will be tempted to bend objects just to see if they will break. Also avoid placing CDs near high traffic areas in your house.
CDs are very small, and easily overlooked when walking through a room.
Children may also perceive these round, flat objects as Frisbees. Remember that the laser reads the bottom of the disc, not the top. When cleaning a CD, extra care should be given to the bottom of the disc. CDs are not engineered like vinyl albums of old, and circular cleaning motions may distort the information needed to play the disc. Such distortions may create the 'digital skip' sound you may hear while the disc is playing.