My interest in diapers goes back pretty much as far as I can remember. I started borrowing my sister's (formerly my) cloth diapers when I was six years old. I poked myself in the hips with diaper pins pretty regularly in those early days! (I can remember pricking myself and being immediately concerned about getting blood on the diapers, as then my mom would see.) My sister is/was only just over a year younger than me, but wet the bed consistently until she was nearly five, and in those days you just kept wearing baby diapers until they didn't fit. Waterproof training pants and bedwetting diapers weren't really a thing yet.
Gloriously, the diapers still fit me perfectly, and while my sister needed them, she also had a diaper pail in her room. I can remember wearing and using on several occasions, and then sneaking back to her room and dropping off my wet diapers. This practice led to the one and only time I can remember being caught by my parents: I'd managed to sneak a diaper and wet it, but hadn't managed to return it yet, so with the intent of returning it later, I stuffed it under my bed and briefly forgot about it. By the time I remembered, it was no longer there! Surprisingly, my mom didn't confront me at all about it, but just gave me some odd looks. I was scared to death, though!
And to make a loooooong story short, those cloth diapers ended up being kept around after sis was done with them, and I ended up wearing them (but not using them) for many more years. Perhaps unbelievably, I actually have four of them, recovered from a box in my parents' garage a few years ago. And the rest are still there.