Struck Idiophones (Xylophones, Glockenspiels, Lithophones...)

Just curious if you may know what these are and if so, how do you feel about hearing one in a musical piece? Does it really change the mood or atmosphere for you when listing to a piece that involves one of these insturments? If so how do you feel when you hear one? (regardless of the key they are played in) I know it's a vague question feel free to add onto it too, I'm just curious because they are kind of rare instruments to hear in most genres of music.