Get the ball, as far across the room, up the trail, across the field as you can, without dropping.
assorted ABS plumbing parts from the hardware section, ping-pong ball, golf ball, other choices along those lines
better when all pieces of pipe are different than each other, and maybe only one striaight length, 18" long max
Each patrol member may choose a piece of pipe fitting from the assortment.
Leader introduces the ball to the first person's pipe, and they're not allowed to drop the ball, or touch it with anything but the pipes, or else they start from the starting line again.
How far can they get, and then how far how fast, to increase challenge.