The collective noun for Lifesavers (the candy) is a roll of Lifesavers. There is no collective noun for lifesavers (also called a life ring). However, a noun suitable for the situation can be used, for example a stack of lifesavers, a row of lifesavers, a locker of lifesavers, etc.
ABC
Each roll of lifesavers has 14 candies in it.
Chew up wintogreen lifesavers in the dark with a mirror and look into it carefully. If you see little blue lights in the mirror, they are sparks
There used to be cotton candy lifesavers in their easter ones but not anymore that I can find :(
Clarence Crane
yes.
10,000,000,001 flavers
Blackberry
lifesavers
Sugar
So they are easy to spot