I babysat for my cousins children from the age of 14 when the youngest one was 6 months old and the oldest one was 4, i loved every minute of it! they always ask now if their parents can go out just so i can babysit for them! i watch films with the kids, let them both have an hour with their tablets before bed and always put them to bed at the time i was given. i would make them some tea and one treat for the night.