The cartoon boing — a metal spring stretched and released — is one of those sounds that everyone recognises and nobody knows where it actually came from. Real coil springs do produce something close, and these 31 recordings capture both the authentic and the stylised variants: pure metal spring boings at multiple tensions, the recoil snap of a heavier industrial spring releasing, the Roblox coil tool's signature jump-pad chirp, and the high-voltage zap of a Tesla coil firing in short bursts.
Animation and meme editors reach for the stylised boing material because it lands the gag in under half a second. Game developers building platformers use the jump-pad chirp for trampoline mechanics — players recognise it instantly. Sci-fi and steampunk projects pull the Tesla coil zaps for laboratory scenes and power-up moments. The industrial spring snaps double as one-shot percussion in experimental music work. Take what fits the cut — everything is free to download with no signup or licence chase.