Noone is no, and if you think about it, it would be very difficult as there is no standard size. There's are cases for any number Of objects that might suit tho, from a pool cue case to one for a keyboard synth, banjo case, trombone case etc etc
I'm sure there is some kind of hard case that will fit a CBG or Bass, I've just not found one yet. BUT! I found that a Fender Squire Gig Bag for a mini Strat works really well on most "standard" size CBG's.
I think I posted a pic of mine on here somewhere. Check my pics.