In reply to balmybaldwin:
Gin.
We have done this for a couple of friends who have had babies.
M&S bottle of pink/sloe gin. Big Avery label (say 1/4 of a page of A4). Stick new label on over old one and put on your best art hat, write "Special Medicine for Parents" on the label. "Instructions - mix two table spoons full with a pint of tonic and drink slowly to relieve symptoms of children (headaches, irritability, depression). WARNING: Taking more than the recommended dose can result in headaches, nausea, depression or in extreme cases more children".
Seriously they'll need something to go to some days when they get to 6 o'clock and realise they are tired, stressed and dehydrated and a nice big weak gin can work wonders for morale.