Those posts for little home gadgets that show up on social media, kinda like "as seen on tv" stuff but since it's tiktok/insta and other such sites, what would those be called?

Just asking cause I don't know what term to look for. I've also seen a couple sites that sell bunches of em for like 10 or 20 percent off, but those could be scam sites cause they disappear after a few months