Interference box?

[Jack!]

Can you get small boxes that are like a faraday cage that you can put over audio connections? My new head unit has some RCA connections, and I was thinking of putting them in little anti-interference boxes, both to stop them coming loose but also to block any interference.

Do such things exist? I know you can get ferrite beads etc, but I'm looking for almost like an electrical choc box to go over the connections, that is insulated.

 

[McGherkin]

Could probably make your own with some mesh and a soldering iron.