Pine cone bird feeders, storytelling, forest huts and music will all feature in Sunday's Children's Day celebrations.
The event is being run under the Sustainable Backyards Rotorua banner in the Redwoods, under The Sails.
Previous Children's Day events have involved lots of equipment and activities but this year it's about the basics and allowing children to use their imagination.
It starts at 1.30pm but is designed to allow children to complete one or two activities in half an hour or stay all afternoon.
"The forest is one of our best resources," said Jill Walker, one of the event organisers.
"I'm really looking forward to this year's Children's Day. The first one we did in the Redwoods all our activities were on the lawn but the last few years we've been in the forest with lots of stuff."
Redwoods Visitor Centre manager Julianne Wilkinson said it was a chance for children to use their imagination in a natural environment.
"They'll be creating their own fun, the event will be driven by the children. We've had a shift from providing everything and trying to meet the needs of every age group.
We're aiming this at the 10 and unders, to be creative and use their own imagination."
The Travelling Tuataras will be on hand to help out with the fun especially the story-telling - which is due to be held at 2.30pm and 4pm.
There will be musical instruments for children to use.
Sustainable Backyards Children's Day is free. It's from 1.30 to 4.30pm at The Sails, Redwoods.