The Forest of Forever was the storybook world of the children's holodeck series The Adventures of Flotter, home to the water sprite Flotter and the tree creature Trevis, and a favourite of Naomi Wildman.
The forest is shown in the fifth-season episode Once Upon a Time. The programmes are gentle teaching tales in which a child helps the two elemental friends solve problems, and several of the adult crew, Janeway included, recall playing them when young.
Naomi is absorbed in one adventure while her mother, Samantha Wildman, lies injured in the Delta Flyer, buried under rock after an ion storm. Neelix, haunted by the loss of his own family, tries to keep the news from her.
In the story an ogre of fire burns the forest and evaporates Flotter, mirroring her fears. When Naomi learns the truth she hides there, and Neelix comes to find her. Flotter also appears in later episodes as a doll and a lunch box motif.