Bodhi does not share her toys. She's no fighter, but she will not share. She's an only dog, and her manners in that area aren't up to speed, so she gets all iffy if someone sniffs HER toys. Not nasty, but you know..... like "erm, you better get your stinking nose off MY toy".
Which is why I wouldn't advise toys and large groups of dogs you don't know. Never mind how good YOURS are.
You have no idea how other dogs will react if your ball happens to cross their path and they pick it up, and your dog goes for it.
If you wanna take toys, and your dog gets into a fight because another dog wants YOUR toy, you have to take that risk!
I always take toys on walks, and never had a problem, but I don't walk in areas where dogs are concentrated. We don't have dog parks.