If you can arousalize non-dairy coffee creamer in the air enough, it can make for a cheap flash-powder if you have an ignition-source inside the model building. If the film is slowed-down, should appear to be be exploding vapors consuming the house.

Try sprinkling a bit two or three feet directly above a lit candle or lighter, to see I'm not misleading you. Enough from one of the single-serving packets would make a nice 'foof'.