The correction tape uses gears as shown.
The electronic dictionary uses linkages to open and close.
The alarm clock uses gears to work.
The following above shows a curtain. I figured that it might be a problem as the curtain are high from the ground. So it may become a problem for the young, besides, climbing on things are not very safe. I think levers could do to help this.
Someone would pull 1 down, therefore, 2 will move upwards. therefore "drawing the curtains.