This morning we went to the local theater's free summer show for kids, which happened to be Kitt Kittredge. For some reason my kids were fascinated with the hobo camp. So upon returning home they decided to make hobo tents of their own.
My son used four wooden dowel rods with duct tape to hold them together as the frame. Over that was draped a wool blanket and because I wouldn't let him punch holes in it with stakes, bricks held the sides down.
My daughter went with an indoor model (knowing it could stay up longer). She gathered four chairs and draped a quilt over them, using stacks of magazines to hold down the sides.
They're a pretty creative pair when you turn the TV off for a few hours!