Smilers stamps can be customised with photos and designed to celebrate events and special occasions.
The work was made in response to a Roger McGough poem:
Let us celebrate the special
Let us put happy before birthday
New before baby, beautiful before bride.
The Mum, the Dad, the Grandparent,
Let us celebrate them with pride.
Let us celebrate the gift of the last
The present, and all that survives.
Let us celebrate celebration
For without it, how dull our lives.