3 sizes of paper bags, opened, closed, struck with fingers, pencils, ball-point pens (biros), flicked with water, wrinkled and unwrinkled;
A stack of folding chairs (pushed down a stair-well);
Music stands (the big heavy, black types used by orchestras, etc.,), played with drum sticks, rattans, marimba mallets, nails (of varying sizes), screws (of varying sizes) and car keys;