I'd like to find a case for it. I'd buy a gig bag if I could find one that wasn't too expensive (which definitely means around $100 or preferably less) and I would be sure this thing would fit into (with its goofy sideward-pointing bell). But I'm not seeing anything that meets those criteria.
So I started to think about making a case for it. I would do this from thin plywood and possibly fiberglass reinforced -- along the lines of the approach used in "stitch and glue" kayaks and canoes. This would yield a strong and light case that could even be shaped appropriately.
My current puzzlement is how to do the padding. I suppose I could carve blocks of foam and glue them in, but that seems a bit tacky (though it would work!). Alternatively, I wonder if I could somehow make use of the self-expanding insulating foam you can get in home supply centers (and is quite easy to use and nowadays not very toxic

Does anyone have experience in making your own case, or in adding padding to a case?
Failing that, any completely outrageous or unsupported opinions you care to offer?