I think it came to me...what to do with the swimming pool during my post-apocalyptic graveyard themed Halloween party. It seems so obvious and I hadn't thought of it before. Tell me what you think of this idea:
Put a bright green lens on the pool light to make the water neon green. Place plastic containers with radioactive symbols all over the surface, bobbing up and down. I'd love your input and then I can start collecting containers.