This green light made an interesting effect when it lit up and exposed the web
Putting fake spiderwebs in front of colored light is a great Halloween party decoration. It might be less exciting if it is an actual web with actual critters on it, but they are fascinating anyway. Just look at this next picture.
Are the little dots stuck on the web its offspring or its meals? The answer does not matter, as long as they stay outside. After all, how cool it looks only depends on how far away you can watch them from.