Here is my singing pumpkins setup. I built two tombstone boxes one to hide the projector, and one for the pumpkins to sit on. I doubled up the sides of the boxes to enclose the PVC pipe for the rebar hammered into the ground. for the one to hide the projector I only doubled it up about half way, so I could put a shelf inside the box. The projector sits on the shelf. I used the black spray paint with grey drybrush technique to make it look like stone. The attached pic is one of my store bought tombstones getting modified for dry brush and PVC installation. The projector box is sitting right behind it.
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Here are the two boxes together after the dry brush technique.
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