[hyperific]

In Andy Weir's The Martian one of the characters uses a mixture of sugar and liquid oxygen as an IED. Loads of energy in sugar. Glycerin is also quite energy dense. I used to do chemistry demos for high school chem classes and the potassium permanganate and glycerin demo was always a spectacle.

[fullspectrumdev]

A similar lab demo I recall also is the gummy bear dropped into a test tube of molten potassium chlorate.

Rather spicy reaction ensues.

[hyperific]

Also a good reaction. Nice orange/pink flame.

[colechristensen]

For a lot of propulsion kinds of reactions you can mix a good oxidizer (liquid oxygen, high percentage hydrogen peroxide, fuming nitric acid) with any organic solid. Hotdogs, sugar, fat, or just anything really made mostly of carbon.