Messy and a pain to use but us poor folk couldn't afford batteries. The ones weMy Dad bought me one of those carbide lights that clipped onto a miners helmet just because it was a neat thing back then. My Dad was a pretty neat guy.
They would go off under water. Also Silver Salutes. Ever flush one? Or put one in a rural type mailbox? Ain't saying how I know.........M-80s and Cherry Bombs. Oh what fun!
Shoot them with a sling shot or tape them to a rock and throw them in the lake. They would go off under water.
Wish I had a box of them now..