@ashtv had a project where he wanted to make a black hole but i thought it was a worm hole :D and i just realized that so it will most probably not help him :D but i had an idea of doing it with plastic optical fiber cables. I had some around from some other project that i never did so... Here are some results, and you can read about the struggles and how it was done at the end of this.
The idea was to make lines in a tube with this fibers, and when you shine the light at the end of it they lite up. And after all this taping it one by one, i realized that my flashlight just died on me. Yesterday it was working, today it just said f-u. As you need a strong light for this, i ended up using Yongnuo reflector. Not really user friendly thing to use. If i become a octopus or shiva, or maybe find a way to rig this, so i can move the paper role back and forward and also spin it i will get back to this to try and get some more interesting shots.