I liked an idea suggested by a member to have some ghosts darting amongst the trees in our haunted woods. After thinking on it some, I though the idea of using a projector would be cool. It would give that transparent ghost effect. Which kinds of projectors should I use? The Home theater projectors would be ideal, but I just don't have hundreds of dollars to sink into one of those set ups right now. I saw some projectors online that basically are used to project an image on the side of your house or whatever. Could I use one of those? Maybe I could paint & make my own projector "slide" out of transparent plastic & make it move by actually moving the projector? Also, how well would it project against trees?