Stimulate imagination through interactive play, building creation for kids ages 3-8 Light and Sound: Excavator toys for boys 3-5 year old. 5 in 1 Construction Trucks: This trucks for kids 3-4 years includes a 12.9*3.9*5.3in carrier truck and 4 small cars (crane, mixer, pushdozer and excavator truck). Press a button on the cab to start flashing light and sound.