Geekazoid topic of the day: bushes. There are various bushes and plants in the graveyard scene, of course, and it will come as no surprise to learn that they're used to hide stuff. Spotlights and projectors and whatnot are hidden behind tombstones and crypts and greenery, etc. The problem with plants, however, is that light leaks through. Put a bright light behind a bush, and look at it from the front, and move around. Unless it's a big, thick bush, some light is likely to leak through in spots. In the graveyard scene, where space is at a premium, you can't have huge bushes hogging the tableaux. So how do you keep anything from leaking through the bush? Simple, the bush is really a plywood cut-out with greenery glued on the front, so that it looks like twice the bush it really is. See those funeral cypresses behind the singing busts in the previous post? Want to see what they look like from the back?
Here's a real closeup of a fake bush next to a pop-up at WDW.
The reddish and yellowish colors used for much of the "greenery" looks good under a black light, like real plants.