Being in the evening adds to the attraction.
"It's a lovely celebration to have and to have it in the evening, so it's a bit special for the kids to come along in their PJs."
The library has only recently started holding its regular activities such as Read, Sing, Move and Baby Book Boogie as Covid-19 restrictions have eased.
"I think this will be a nice one to remind people we have started doing these things and we'd love to see them and love to have the families come and join us."
The evening's storyteller will be Te Whetu Hawera, the Māori student mentor for Te Puke High School.
Matariki, Milo and Marshmallows starts at 5.30pm on June 22.
Spaces are limited so registration is essential and is via the eventbrite website.
Children must be accompanied by an adult.