I feel like the DCIB community is mostly made up of people with slightly off beat taste. So I suspect there will be some interesting answers to this question.
When I was a kid, most little girls my age were reading The Babysitters Club and watching Disney movies and Disney Channel. I did that, I wasn’t a total freak, but I also had some very off-beat unusual interests. Not like “1950s movie musicals” kind of interests which are totally acceptable normal things for kids to watch, but like “Tarzan books with lots of violence and action and racism and sexy covers” which are less normal.
Here are some things that my sister and I got into as kids:
Beach Party Movies. 1960s teen sex comedies aimed at 1960s teens, and my sister and I watched all of them (even Pajama Party with the Martian plot) when we were 10-12 in the 1990s. Much of the jokes went right over our head, but the pratfalls and simple humor was perfect for our age. Plus the songs were bouncy and it was sunny and just overall a pleasant world.
(This is from Beach Blanket Bingo, the best of the Beach Party movies, I think.)
Perry Mason Books. Very successful book series, nothing odd about that. Except I was, like, 11. And they are all about drinking and dating and adult things in the 1950s. Most plots revolved around infidelity and sexy dancers and stuff that 11 year olds shouldn’t know about. It didn’t bother me, but my parents couldn’t help being a little embarrassed when their little girl went around with books called “The Case of the Fan Dancers Horse”.
Okay, those are my things, what are your things?