The classic two-step pickup: a short low note jumping straight to a long high one, on a square wave for that chiptune edge. Use it for coins, gems, points or any small reward. The name and sound are ours; the idea belongs to every arcade game ever.
square 988 Hz (B5), 70 ms then square 1319 Hz (E6), 380 ms envelope: 1 ms attack, 300 ms decay on the second note