"Vovos he brought and the blackjacks"

In the 1960s Vovos were a popular biscuit and blackjacks were ( still are) a popular aniseed flavoured chew sweet. Money was tight and treats like these would have been rare. Lamb obvoiously had money and wanted to ingratiate himself with Ada by bringing sweeties to her granchildren. Of course he was probably also grooming the children to satisfy his baser needs.