For instance, get a dozen potted plants all alike that look similar to marijuana. Take them out of the house once a day and water them in the back yard. Then, looking all around, bring them back into the house. Leave them in a room in sight of the camera with grow lights on day and night.
or go out at night and dig a hole in the back yard, put a "bundle" of something in there. Cover it up, look suspicious.
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Oh, I LOVE this one. It sounds like something my family would do, and has done in the past!!!
And I would add a cardboard fence on his side of them so that his cameras couldn't quite get a good look at the plants. Then rush out after bringing in the plants and carefully fold the cardboard and put it under cover!!