I could make that easily enough. Not sure how easily/cheaply i could get a piece of 3V though, having never used it before. But if you want to commission one at some point, just give me a shout and i will do some research about that.
Just thinking in general at the moment while I save up. Something like a bushcraft knife, preferably flat or sabre grind, about 4 - 5 mm thick and 4 1/2 inches long ish. Mi I g metric and imperial I know! A reasonable finger guard would be good too.