I have used the trusses for so many applications. I screwed a 4'x4' plywood base to the bottoms to give a bigger footing. Then strapped small movers and small projectors on top. Since they are black they hide well and give moving lights multiple levels behind the set. In other blogs they are the tower cubes and in another have white tires hanging from the fronts. These of coarse can't and shouldn't have heavy lights hanging from them.