Old Tech Tuesday

Welcome back!  For this week, lets talk experiences.  Key memories are typically associated with multiple senses. One great example is the resurgence of the clickety-clackety mechanical keyboards.  

What's sound, touch, or other sensory experience that unlocks a key memory?  

Mine is the sound of a dot matrix printer, where I had to print projects like hello_world.java from the sun microsystems computers in the basement computer lab.