These Hello Kitty characters are all stampers. They are made from hard plastic and stand approximately 7cms tall. Each stamper comes in two different colours and
the colour of the stamp matches the colour of the ribbon in their hair:

Blue Car Stamper - red "HAPPY" stamp.
Yellow Car Stamper - purple "HAPPY" stamp.
Green Apple Stamper - red "LUCKY" stamp.
Red Apple Stamper - green "LUCKY" stamp.
Pink Heart Stamper - blue "SMILE" stamp.
Blue Heart Stamper - pink "SMILE" stamp.
Turquoise Aeroplane Stamper - green "PARTY" stamp.
Green Aeroplane Stamper - grey "PARTY" stamp.

Click to view stamps