clinton hammond was looking for hardware for a bag he was gpnna make form leather..he might have f0und somd "D" rings and other "notions"
for the hardware...there are 2 companies here that make over coats": for instruments...Blue Heron http://www.blueheroncases.com/
and i have a silver job over my case...used to be made by Climate Case.
now made by Allen Guitars they are one of the ones mentioned here:
http://www.guitarseek.com/getcat.php3?catid=88
http://www.allenguitar.com/case.htm
www.swinggeezers.com/links.htm
i found a way to lash my guitar onto a back pace frame...
there are some back packing packs that have a frame and
various straps, etc, so you can connect things onto them.
i also have be3en know to slip my nyckelharpa into a back
pack and then "wear " it with the straps...i have to be
careful in doorways, though to duck to get thru!!
good luck.