ammonium hydroxide with iodine crystals
Ah, Mr. Estes' chemistry class.
He'd give the smart kids hints about what to research, and didn't react (save the big grin) when the more ... interesting ... experiments were tried. The stockroom was the most amazing place on earth to a young smart teen.
Nitrogen tri-iodide.
Hydrogen + oxygen ... lots of it.
Figuring out which boxes of yellow powder were radioactive via photgraphic paper.
Finishing labs fast so we could scour textbooks for the secrets of exothermic reactions.
He DID keep the sodium out of reach.