We used to have a nice group of young girls my age when I started riding and we'd have so much fun on Saturdays.
I miss racing up hills with them. Sometimes one of us would have the horse that wanted to to run a little too much, so we'd let that horse and rider run up the hill first then the rest of us would race each other to the top.
We'd wander around the property on our horses with our eyes closed and then open them and see where we'd wound up. (I always cheated and peeked xD)
When the BO was out teaching lessons, we'd climb in the rafters (once we made a hammock hung entirely made of baling twine) and ride the pony around tackless in his stall.
We also milked a mare and tried to give the milk to the barn cat.