The newest sound-making device is the trampoline - and here's a synth made for bouncing on it - CDM Create Digital Music
Buy Foldable Indoor Basketball Game, Dual Shot Basketball Arcade Game with LED Scoring, 8 Game Modes and 5 Balls, High Accuracy Electronic Scoreboard and Sound Effects Online at Lowest Price in Ubuy
60+ Free Trampoline & Jump Images - Pixabay
Trampoline Sound Effects - Audio MP3
Trampoline Game Jump ~ Sound Effect Royalty Free #46749580