Much to my disappointment, Max does not like balls of any kind. He does not allow Teddy to play with them either. Little stinker.
Max's favorites are his Ty Bow Wow Beanies that have crinkly paper inside and squeakers. The Weenie dog has been his best friend since puppyhood. I bought backups, but he always knows the original:
Teddy's favorite toy is an empty water bottle inside a tube sock.
I also make ugly soft toys for them with squeakers. They love them!