The Silencer

The Silencer would be some sort of block or item that could be interacted with pistons, dispensers, etc. Basically, the silencer (upon usage) would... well... silence the clicks or sounds of those blocks. This would allow for silent contraptions and silent traps. Instead of hearing the annoying sounds of dispensers clicking, you could have a silenced machine! Although there's already a feature for removing those sounds in the "sound settings," it removes the sounds of other blocks aswell.