These tiki are souvenirs from New Zealand from different times and places. They are based on the Maori hei tiki, highly valued neck ornaments, often carved out of pounamu, or NZ jade ("greenstone").

In New Zealand, nephrite jade from the South Island is known in Māori culture as pounamu, meaning greenstone. It’s used to create clubs, tools, urns, and ornamental pendants known as hei-tiki ...

a type of Jade which is highly valued. Some have paua shell inlaid around the eyes. Tikis represent either Gods or Ancestors. It is forbidden to steal a Tiki but if one is found it may be kept.

A hei matau, made from pounamu, the Maori word for New Zealand jade or greenstone ... Later, pieces of jade jewelry carved with Maori designs sometimes were imported from China.