The tiny Tindims are like the Borrowers-on-Sea, who turn our everyday rubbish into treasure. Mother-and-daughter duo, prizewinning Sally Gardner and Lydia Corry, create a fun new world of characters and adventures in their empowering new series for 5-8 year olds inspiring conservation and inventive ways to recycle.

In their third adventure Ethel B Dina, who looks after the fish hospital and loves to sing, needs ten green, glass bottles to complete her musical Bottleramma. But she is surrounded by too many plastic bottles which do not make music. Join the Tindims in their glass bottle hunt and meet the Tindims explorer, Tiddledum.