Here’s an easy and cheap way to make your own noise blocking headphones. All you need is a pair of ear-protection earmuffs ($15.50), a cutting tool, and airline/walkman style headphones.
Simply snip the plastic headband and place the headphones inside the earmuffs and you’re done.
Kinda the reverse of our beloved Etymoics.
A great way, albeit slightly funny looking, way to listen to music and block outside noise without dropping the dollars for those fancy Bose noise-cancelers. — BEN POPKEN
Jackhammer Headphones [Instructables]