When DC's wake in the night and need attention, kick or elbow DH awake with the words "I did it last time". Even if there wasn't a 'last time'
When taking your DC's to school remember to bark in a loud and braying voice how marvellously your DC's are doing with their mandarin/violin lessons. You will never be approached by other mothers and can make quick exit from the playground.
Ensure that your children eat their tea in the bath. That way they cannot 'leave' any because they have nowhere to put it, there are no dirty clothes to clean when they spill anything, and it will take half the time. (Not recommended for pasta dishes)
With newborns, always invest in a hamster water dispensor and attach to side of baby's cot. squeeze in some boob milk every once in a while when passing.
Constantly allow your DC's to 'overhear' your conversations with DH regarding the grandaparents and how they have been discussing having the kids stay for a sleepover and lashigns of ice cream. That way they will nag their GP's to stay and you will graciously accept when the GP's give in and offer to have them.