Duvet cover inside pillow case ... such faffery.
All the microwave cake in mug type "hacks". Just cook a proper cake or open a packet of digestives!
I also don't like the advice to keep visitors away when you have a newborn, particularly grandparents. Seeing a baby at two weeks old is not the same as seeing it at one or two days old.
Line a puke bucket with plastic bags for easy clear ups ... No! please don't send puke wrapped in plastic off to landfill! Flush it away down the toilet like a civilised human.