It's a beautiful story and very creative. I thought it was lovely how the mother involved her children in making this place a little more magical with so much spiritual thoughts behind it, both for themselves and for others.
Then there is the practical aspect. You can't have people just go into a publicly listed forest and start modifying it. The beauty of the forest should perhaps be left as it is for people to enjoy nature to it's fullest extent rather than 'disneyfying' it. However, I think there could be opportunities to expand on this idea.
Perhaps it is possible to create inspirational areas set aside within cities or country areas. We already have parks with children's play areas and could easily extend it but it's highly unlikely as it would require too much red tape and a big likelihood of vandalism.
The little firefly forest was nice while it lasted but unfortunately anything good in this world today does not have much hope of lasting very long. Let's hope that something more can come from this.