How Max spends his day

After two weeks at home Max has throughly investigated the playroom to his liking. He has now moved on to a new room and a new daily routine. His new local? Numerous times a day Max can be found at the tupperware drawer. He loves to open the door, take out each item. Place them in his mouth - grunt or growl- then he throws them on the floor. After everything has been unloaded he then works dilegenly to get his round self into the drawer. When that is finally accomplished there is wild applause (from him) and he quickly hops out and puts everything back into the drawer. After about 20 minutes the activity repeats........yesterdays final drawer fun count totaled 9 times. Is this obsessive behavior or normal toddler....should I be concerned?