Hanging Lights

By hanging lights, I'm referring to lights being hung on the roofs of rooms. I was thinking about doing this in my bedroom, but I'm not sure if it's safe. I live in an apartment so I can't put any holes in my walls, so i need hooks to be on the wall but NOT in. I also have an asbestos roof, so I can't put it on the roof without being unsafe.

But it would be a nice thing, other than it being hard to put on. I have one light in the middle of my room. The light has the color of prison light, so white it looks like it reflects back into itself. My rooms wall is a baby blue color, so the warm yellow of the lights looks better on the walls of my room. But, what are the worries then?

I'm worried about the lights falling. If they're not rooted firmly into the roof they might fall onto the floor, and with me sleeping, I would wake up to the sound of dozens of lights falling, maybe some falling on my bed and/or myself. Also, what if one droops? Like they're all uneven and don't look good? Then what's the worth getting it all set up? Anyway I'll say goodbye from the prison light of my bedroom.

Sincerely,

Someone with bad lighting