good idea about putting squeakers in other toys as I got 2 toys from a charity shop but ours won't touch them. Not sure if they don't think they are there's although I do put them in their box and try to play with them with the toys.

Harley is ball mad and will play with a ball even when the squeak has gone and the ball has holes. His sister like fluffy toys so I found at our Pets at Home a tennis ball with a squirrel like tail attached, it keeps them both happy.