gacha-gacha
Metal or hard objects clattering together in a messy, chaotic way — keys jingling, dishes piled up, toys scattered.
💡Searching for keys in a bag — 'I heard a gacha-gacha sound from the key ring.'
鍵をがちゃがちゃ鳴らしながら探した。
I searched while jangling the keys gacha-gacha.
He was ___ rattling his keys trying to find the right one.
正しい鍵を探して○○鳴らしていた。