Started with both Xmen movie play sets I added paint and printouts and all sorts of bits.

And of course a couple minimates ghosts and pink slime

The fire for the torch is from a costume torch with a light inside that can either flicker like fire or cycle through random colors for extra ghostliness.

Hard to see in the pic, but at the top is the final screen from the NES ghostbusters game and the Advantage controller to drive the statue of liberty.