1.   American airports are a series of mazes connected by tubes.

2.   In the case of the plastic tubes, the performers have to hunch over, like insects, to make the tubes connect with the miked floor.

3.   The shoes and tank are connected by tubes.

4.   Two plastic tubes connect a water bottle to a bulb pump.

5.   It consists of a toilet, a sink and a tube connected to the water source.