Jhoomer lights are kind of decorative lights used at pandals and functions to give them an attractive look.And I am very fond of them.
Here is one captured at a Durga Puja Pandal at Rest Camp Maligaon,Guwahati
Jhoomer Lights
Jhoomer Lights at a Durga Puja Pandal
All Resource 
I don’t remember seeing something like this; looks great 🙂