Babies around this age like to drop things not because they are violent or like to destroy. They are just curious how things can drop after letting go.
I don\'t get angry with them, just make sure you don\'t give anything dangerous or expensive to them. When they drop things, tell them things will fall and break. After few times they will get the idea and stop. If they bite, tell them its painful and show them you are not happy. My baby stopped biting me after 2 times and now can still breastfeed.