In Constantine, what did Isabel drop before her suicide? It looks like a pair of rings.
What was the meaning of throwing them off the roof first?
A closer inspection reveals them to be two heavy metal loops, presumably those used by the building's window cleaners to attach their materials to the roof.
Note that she didn't throw them, she accidentally kicked them off. In the original script it was a bottle but I'm guessing the filmmakers struggled to explain why there was a bottle sitting on the roof edge whereas "random roof stuff" makes more sense.
XT. ROOFTOP - NIGHT
A metal fire door swings open and Angela bursts out -- breathing deep. She runs across the tar roof, almost afraid to look back. She gets to the ledge, steps up. A BOTTLE in the way fall[s] -- FOLLOW IT DOWN TO the --
-- where it SHATTERS --