How do you celebrate the arrival of a second (or third or fourth...) baby?

Apparently the event is called a Sip'n'See.  You come to sip drinks and see the baby.  I just love the name since it's so low key.  It only implies drinks, not even finger food, and it only implies seeing the baby, not even a real visit.  Perfect for a mom with a new baby who isn't ready to host a big event.  This example (where I found the idea) did take it all the way (which I probably would too), but I like how the name doesn't put any pressure on you.  Look forward to a couple of these little parties in our family's future!