Picture 1: The scissors is a first class lever. Its fulcrum is in between the load and the effort.
Picture 2: This nail clipper is a class 2 lever. Its load is between the effort and the fulcrum.
Picture 3: This is a table lamp, is has linkages to adjust its height and where the light shines.
Picture 4: This is a foldable clothes dryer, it uses linkages to fold the dryer open and close, and to keep it open.
Picture 5: This is a foldable kitchen door. It uses linkages and pivots to fold open the door.
This is the video of the problem situation: http://www.youtube.com/watch?v=0Pt542pocFU
This is a piano. When it is closed, the fingers of the person closing the piano might be wedged between the piano cover and the piano. Below is the solution for the situation.