Every Wednesday I have the very important job of collecting my niece Rosie from school. 
It generally involves a trip to Sainsburys for some kind of snack or magazine and then home to watch The Worst Witch and pretend we work in a cafe/school/dance academy. 
She quite happily spends the couple of hours we have together jumping around my house, flinging herself off of furniture with one main rule - Don't Hurt Yourself!