Like another PP, DS loved chomping on anything that made a crinkly noise. He loved that book, as well as these toys
http://www.amazon.com/Lamaze-All-Ears-Elephant-Developmental/dp/B006I0R9AK/ref=sr_1_1?ie=UTF8&qid=1392340176&sr=8-1&keywords=lamaze+elephant
He also liked these when put in the freezer (and at 14 months he still prefers to chomp on them rather than put them on a boo boo)
http://www.amazon.com/J-L-Childress-First-Cool-Elephant/dp/B00DE72EBY/ref=sr_1_11?ie=UTF8&qid=1392340306&sr=8-11&keywords=boo+boo+buddy
He didn't start liking Sophie or teething rings until he was older.