Dale, at 1 year old -
Terrified of any toy that makes noise. Music, sound-effects, anything that has batteries. Terrified.
Alan, at 1 year old -
Enjoys surrounding himself with as many light-up, music-playing, noise-making toys he can find and pushing all the buttons that make them all play. All at once.
The word cacophony comes to mind.
As well as the word headache.