Easy way to make FBI-escque earphones. This is very useful if you ever want to listen to music but also have one ear free (for instance while biking in the city)
Step 1: cut up an old phone cord
Cut the ends off an old springy phone cord.
get some earbud headphones, cut the earbuds off and cut the jack off.
you will need:
1 jack (stereo or mono)
1 cut phone cord