The cord for the cd.

Create a new document, make a 2 pixels line
black color
Filter --> Disort --> shear
Play around with the setting
untill you see something you like.
After you finished duplicate the layer
and move it 1-2 pixels to the right
to get this effect on the left.
Now just give it a Drop Shadow
Color=black; Layer effect= Multiply 66%;
120 Angle; Distance=13; Spread=0; Size=10.
Thats it!