Classical composers were noted for humanizing instruments by having them represent bees, animals, scenes, and events. Here are four compositions that are perfect for having children hear instruments and "see" in their mind's eye living things and scenes. The first three classical pieces are linked to YouTube videos and the fourth video is embedded below.
"Flight of the Bumblebee" Nikolai Rimsky-Korsakof
"Carnival of the Animals" Camille Saint-Saens
"Pictures at an Exhibition" Modest Mussorgsky
"Peter and the Wolf" by Sergei Prokofiev