I haven't done dog jerky treats but I have done bones. Depending on the size of your dog, you can smoke beef or pork bones - go with something like leg bones, large neck bones, or knuckle. I think ribs (especially pork) are too small to be chew toys. They can fracture and dogs can choke on them.
You will probably need to find a whole animal butcher, I don't think you will find bones that size in the local grocery store. Think of a veal or lamb shank... You want that bone, but from a cow. Lamb/veal shank may work for a smaller dog, just please do be careful that they are the right size and err on the bigger side!
If you can find them, smoke them until they are well done. Your pup will be extra happy if the bones still have some meat on them rather than being completely scraped clean.