Not just any kind of a ball, and certainly not the soft foam rubber type, (which can be chewed to bits and swallowed), not the inflatable children's ball that can puncture with his sharp baby teeth. Buy him a hard rubber ball that is too large to be swallowed but small enough for him to hold comfortably in his mouth. Buy it, like all his toys in a pet store, not a toy store, there is a difference in the types of materials used.
A larger dog can be given a used tennis ball, but never give any dog a golf ball. Golf balls can be swallowed by some of the larger breeds, and they all contain a poisonous liquid core. Never give a puppy a stuffed animal, or an object of painted wood or flimsy plastic. Avoid toys resembling actual household objects like gloves or slippers, unless you are prepared to face the consequences of him going after the real thing. While children can be warned against putting harmful objects in their mouth, dogs are obliged to pick up everything with their mouth.
When a puppy is separated from his littermates, he misses them intensely at first. The best substitutes for his playmates are a few toys, (one is not enough), with which he can play alone, with children, or with you.
Try to schedule a regular daily playtime. Never right after a meal, because he needs quiet for proper digestion, and never after a long period of confinement, because the excitement of play will make him want to urinate. Before mealtimes is good, as well as before bed time too, but only if he is given an opportunity to empty his bladder before retiring for the night. Whatever the time, the 10 or 15 minutes you devote to playing with your puppy will be the high spot of his day.
During the puppy's teething period, (from 3 to 7 months, more or less), you should provide him with chewing toys of digestible rawhide or, even better, a harmless nylon bone of suitable size. They will keep him occupied for hours on end. They will also prevent a lot of destruction. When you spot him gnawing on a chair or table leg, it is much more effective to say "NO" and immediately offer him the alternative of a chewable bone or ball.
Biting and chewing are perfectly natural and instinctive traits of all dogs. Trying to suppress this activity by scolding and not offering an alternative is useless. At teething time, it is not only obsessive but also very practical in dislodging baby teeth to make way for permanent ones. Like a child, your puppy will become attached to his old toys to those, at least that he hasn't destroyed or lost. But as he grows bigger, you should think of replacing them with other more suitable to his size and strength.
