Ella loves her chew toys. I bought her a Kong, and she loves that. Hard rubber ones are usually the best. No latex as they rip easily, and your pup can chew them up and swallow pieces. As for the Antlers, you're right, they are super expensive. If you know any hunters though, ask them for there antlers or raw bones. My sister feeds raw and her boyfriend and his friends are all hunters, so she gets alot of goodies for her pups, and shares with me for my Ella. She also goes to the grocery store, and asks them for their meet scraps. She gets bones, steaks, chickens.
Also if you have a local pet shop, as apposed to say petco or petsmart, they may have a better deal on bones. I know ours does. My boyfriend was able to get Ella a huge cow shoulder blade for $3.95. It's almost as big as she is lol
Good luck =)