I can think of other reasons to use these besides a time out just remember to glue the cap on.
If you used glow in the dark glitter a person with nightmares or insomnia could watch it until it stopped glowing.
You could make it a faery light and you could hold intent for a spell until it settled or in the case of glow in the dark glitter, stopped glowing.
These are made with upcycled window screen and tea lights I want to make some for Halloween and paint them and put battery tea lights in them Daw: you need old window or door screening, clear plastic bottle bottoms and tealight Cut the screen into the shape of a flower add your tea light or battery operated one.
You could also spray paint the screen with glow in dark paint. and add a stake to the bottom and your done.
Celtic ~Tree of life hair style or Yggdrasil from norse/Viking mythology if you prefer !