Courtoise is a guide during the night. Its phosphorus accumulates the ambient light and the glow of its marbles illuminates your interior.
On a bedside table, strategically placed so that you can find your way at night, or to keep the monsters out of your children's bedrooms...
Watching over your nights, a gentle bubble of immaculate dreams tops this nightlight, as a metaphor for the expiatory exhalation of dreams outside of the sleeping person.
Unless this is actually a regressive rewriting of blowing bubble gum as children?
Courtoise is valiant and performs her duty to perfection, showing herself to be elegant and with no need to hide away once day breaks. Her magical and natural mechanism is eternal.