Have you been on tumblr? Lots of women in the ABDL community on tumblr are physically stimulated with diapers. I see it frequently, especially when their diapers are wet.
I recently found "The Vice" by Locked in Lust. I have my eyes set on their Mini model. My problem with chastity cages is I slip out easily. No cage I've found has had an anti-pullout device. It looks promising. Check it out! https://lockedinlust.com/product/the-vice-mini/
It started a few ways for me. When I was young, like around 6-8 years old, I still wet the bed. I would often stay at my aunt and uncle's house with 2 female cousins. If I wet the bed while staying with them, I was made to wear my cousins panties til laundry could be done. I REALLY enjoyed...