If you're an 80's baby like me it's safe to assume that your access to any type of sexualized imagery was far less, then what our tweens are bombarded with today. Firstly, if only because through the nineties there was no such thing as online (hard to fathom now). The information found in EVRYBODY packs is not new or especially hard to find, in fact its basic knowledge perhaps for anyone interested in how their bodies work. It wasn't that this information wasn't available out there to any parents wanting to find it, it's that I couldn't make the way it was presented to my tween & I work for me.
My (almost) 11 yr. old is my oldest, so her being ready for more context around her own body was expected, but for my younger kids they are not at the stage to comprehend or even care about the topics my tween was ready to talk through. So, despite the great books, of which I bought many, it was the time and place I couldn't find. Not appropriate for bedtime reading with her siblings, nosy toddler trying to join in if I tried to steal a minute anywhere else.
The first inkling of an idea came from remembering the type of flash cards I had when the house was full of babies, what I needed was not an overwhelm of information for her, it was the first facts she was ready for. That flash of purpose led me to making that first 'period pack' with no other intention then to make sure I was preparing my own daughter for what lies ahead. I might not always get it right judging how much to tell her or educating in the best way but I was determined to buffer her against anything she came across in the world she is growing up - where online is not only part of the vocabulary but a way of life.