What’s a product/tool that was very much a “trend” item but ended up working for you and that you still use to this day?

For me it’s definitely my Foreo facial brush. I remember how popular they were back in 2018ish and how I found them kinda gimmicky (i still bought one lol) but it ended up really working for me. Not because it’s anti ageing or whatever but because it prevented me from harshly scrubbing my face with physical exfoliants cause it replaced that “squeaky clean” feeling. I still use one to this day