Child of the early 90s - when I was in primary one, I spent 90% of the year on my teacher's knee. When we went on a school trip, I sat on her knee on the bus plucking her jumper, before promptly falling asleep.
When the same teacher's son was unwell with D&V, aged around 12, he came to school with her and played with us.
My headteacher in P7 (2002) used to take me out of class frequently for a cup of juice/biscuit and would discuss her paperwork with me - because of that, I had an active say in determining decisions regarding the building of a new school, for example. I was also given personal copies of all the building plans!
When mum had the GP, the receptionist took me (3) and my sister (18 months) into the office, and taught me how to draw pictures.
When I was ill, I was given a variety of disprol, calpol, andrews salts, lucozade and once, aspirin (never again, after I slept for hours and hours!) .. Also took the same antihistamine medicine for 7 years every single day until it was discontinued (dimotane, was yummy and would pay to have it again).
My Brownie leader gave me a lift home for four years with no permission slips or anything, just did it - laterally, I called her Auntie J.
Childminders - one stood at the door and chain smoked; another would drive us ten miles away to her friends, who was also a childminder; anther took us to her own house to play with her kids; another used to give us a carrier bag of sweets and videos and then lock us in the sitting room for hours..
My friend's grandmother had a house that was condemned due to rot or something. She - at the age of 10 - had a set of keys, and we were allowed to play in it unsupervised. It was a very old mid 19th c house with a fabulous attic and double garage and full of toys and working landline friend was a spoilt brat .. we had great fun in there with no-one watching.
When DM fell ill in town once, a woman who claimed to be a social work student picked Dsis and I up (aged 2 and 4) and took us to her flat, a few miles away. She let me draw with her highlighters and then showed me her phonebook, and asked me to tell her the names of people I knew (so she could search for their number!). If she did that now she'd probably be thrown off her course.
It was a simpler time however in some scenarios potential for abuse was huge I suppose.