Scissors, a book, pen, and stamps
When the mail arrives, have your child cut the stamps off the letters. Look at the stamps carefully and discuss what’s on them. You can do this together each day for a week, or off and on until you collect enough stamps. Working together, glue the stamps in a scrapbook. Let your child decide how to organize the book. Talk about how much each stamp cost, where they are from, if she has two (or more) that are the same, etc. Your child might want to look up the places the stamps came from on the Internet.
An exciting family hobby may emerge from this activity.