Here you go https://www.amazon.com/WATFOERS-Portable-Microphone-Disguiser-189035/dp/B098XLHJCZ/ref=mp_s_a_1_28?keywords=voice+changer&qid=1676665436&sr=8-28

Some people said you can find it cheaper on Ali Express. I never bothered to look for it. It's $17 on Amazon, not like it's breaking the bank. It also ships from China so it'll take like a month to arrive.