Thank you for the suggestions. Some great ideas to consider. Jay has got me thinking that maybe a hinged 2oz tobacco tin might be the way to go. They are cheap to buy, numerous designs to choose from including custom design options too. The hinged lid can protect the speaker and fixing an eye-bolt to one corner of the tin will allow a carabiner clip to be affixed for a belt loop and the angle of dangle will ensure the lid hangs open.
Please keep the ideas coming though. A steam punk idea is very attractive too.
Nick
