We save a chunk of their umbilical cord, a lock of hair after the first haircut, clothes, shoes and more. More of us should be keeping this potentially life-saving item too.

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How many times have you just thrown those baby teeth in the garbage after the Tooth Fairy visits? A 2003 study shows why hanging onto their teeth is so important. Your child's baby teeth are filled with stem cells and they can be grown into many other types of cells if needed. If for any reason, later in life, your child needs tissue replaced, it could be replaced with tissue grown from those stem cells.

In a survey of what pieces of our children's past we hold onto the most, the number one answer was clothes (71%)

[H/T: LittleThings.com]