I remember when MLP:Friendship is Magic first started to pop off. So, went and watched it. I can definitely see why it would have a multi-level audience, though it was still very much a children's show. Then I found out what a Brony is. One of the first times I truly realized that, collective, the Internet had gone too far. It's been downhill since then.
Fauna isn't old enough for the big craze period, but they very much has stuck around since then. Going through several cycles, and girls still like them, especially with branding deals. Funkopops ended up being beanie babies round 2, lol.
Reminds me of a conversation I had about 2 years ago. A guy, who was already decently successful, was going to get a lump payout for some reason I forget. He was thinking about putting like 50k into Crypto mining. I managed to talk him out of it and into his second idea, which was a smoke shop. Needless to say, the smoke shop was profitable after 3 months and completely repaid the 70k he'd put into start up in 6 months. And he's opening another one. Lesson? Don't follow trendy BS. Second lesson? If you live in the States, Smoke Shops that aren't skeezy are really solid investments right now.