Done with a Synthesizer and some pitching
A Sound made for jump jumping in a flash game.
Bulb-type two-note bike horn - short duration.
Plucking a rubber band that is strung over some styrofoam. Kind of sounds like a bad cello or something. Recorded ...
Cartoon "BOING" sound/recording of a jews-harp.NT4-BMA2-R09HR.
A couple of 'boing' sounds made using a jawharp.
A Husqvarna 385XPG chainsaw cutting through limewood.
Shooting a watermelon rind, a metal chandelier mount cover, and an old bone with steel bb's from about 25 feet ...
A hit on metal using metal bar
Shutting down a big computer. A compressed door bang and sliding pitch shift over sped up computer noise.
Powering down your futuristic vehicle... or robot? I dunno. This is a low freq. version.