This is a standard modern "quiet" light switch being turned on.
a plastic button is pushed and turned off
More like a thump than a crash. This is a box of plastic junk dropped on floor. This is before ...
Weird spaceship like sound lifting off
Happy Jingle, that indicates, something good happens, e.g. you won something or you found a useful item.
A sad paraphrased piece of music with a weak flicker of hope, played on a piano.