Was reading babycenter.com, so we can't tell whether BB is right or left handed till 2 or 3 yrs old...
Grab and go
Anything within your baby's reach is fair game now. While he's mastering his grabbing skills, give your baby interesting things to hold: lightweight rattles that are easy to grasp, a plastic or rubber ring to hold with both hands, squeaking toys, or soft stuffed animals.
Your baby will start to favor one hand for a while and then switch to the other, but you can't really tell whether he's a lefty or a righty until he's about 2 or 3 years old.