Making a bag that looks like a rock?
I'm going to be Masky from Marble Hornets. In one of the episodes, he has a very large rock with him that he threatens someone else with, and I thought it might be a nice idea to try and make a rock of my own to carry around out of foam and paint, but then I thought maybe making a bag that resimbles a rock in some way, that way I don't have to worry about setting the 'rock' down I can't really think of too many ideas, other then maybe just finding a dark grey/concrete colored bag and splattering it with red paint. I did consider possibly sewing my own and maybe sticking wires in it to give the bag a rock-like texture, but I don't have the skills to do that. Obviously, googling "rock bag" or "stone bag" turned up nothing. Does anyone else have any possible ideas?