You see a small plant house.
As you take a closer look you discover some tiny fairies inside.
Location
All over Feyrist, one near NPC Tooth Fairy south of Ab'dendriel.
Notes
There are 5 different versions of this object, each one with the lights off (during day) and on (during night). Most of them cannot be used, however, two of them can, and thus are not displayed here.