For some reason they don't make off the shelf light slinkys
Alot of lightpainting stuff is very bonkers in the way it is created. Thats half the fun

My wire is 1.5 meters long so need somewhere to hide the light coming from it I do have another wire for when i sus the slinky out and will then cut that to the length i need.

Althought a 50cm diameter slinky could be pretty cool