Moss and fairy gardens have become quite popular. Cyndi mails the moss, etc. out and it survives quite nicely. She mailed out a selection to school children in Arizona so they could experience what a woodland forest is like in their desert community.
Green Variety Fresh Forest Fairy Moss...there are others on Etsy who create accessories for fairy gardens such as this darling little Fairy Door
These type of gardens would be wonderful as a family project for children. I know you can't see it in my photo of ours but there is a wee little frog peaking out from a grotto of sorts.