With usual qualification:- based upon what I can see in the photos. 
 
man with bird --- keris, recent, not for wear 
 
black hilt --- keris, recent, Lombok 
 
naked figure --- keris 
 
man with serpent --- pestle or small knife (pisau pemutik or temutik), however, I feel this has been done purely as a sculpture, because both knife hilts and pestle handles usually have a ferrule fitted 
 
By "recent" I mean after WWII 
 
An enormous amount of small sculptures in the form of hilts have been available in Bali and Lombok over the last 30 years; a lot of things produced in Lombok are sold in Bali.
		 
		
		
		
		
		
		
		
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