Here it is. It's 48" long, but you could shorten it if needed. It's made of mountain cedar so it's stout but very light. The "beak" hook on it is nifty too. If you want it, I'll send it to you. I just gotta figure out how to mail it!
End of thread.
OK, kidding -- there are lots of choices. But a good blackthorn, while not cheap, will last forever -- at least insofar as that term has meaning for humans. Your grandson will be giving it to his grandson.
Be sure to get the real thing, not that plastic thing Cold Steel sells.
Plenty of sources on the web. Black thorn More
[ETA: didn't see the offers above before posting. Buying one from a member is a great way to go as well, of course.]