Ask the child to write his/her name (or first initial) on a postcard and "mail" it.
Write a word on a postcard and ask the child to use a crayon to copy the letters onto another postcard.
Ask the child to play "mail carrier" by distributing the letter and postcards to people in the family, then collecting them again. The "recipients" may use the crayons to add a message or delivery instructions for the mail carrier.
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