Levers, buttons, pressure plates, and dispensers should have unique sounds

Levers, (weighted) pressure plates, stone buttons, tripwire, and dispensers/droppers all use the same "random/click" sound played at slightly different pitches; wooden buttons are the only "switch" blocks that use a different sound effect. The clicking sound is the same as the one used by menus and GUIs.

It would be nice if these blocks had different (and more subtle) sound effects. Stone buttons and pressure plates could have a "pressing" sound similar to the wooden button's, tripwire should have a very subtle sound due to its usually hidden nature, and dispensers/droppers could make a sound similar to a witch throwing potions when ejecting items.