On PBP, they featured Vista Print, a company that offers free starter sets of various paper products.
Currently, under their FREE listings, are 'business cards'. They have lots of designs, and I found a couple I would definitely order once Thor arrives and we have an official name. You customize the card, so use them for business, or for mommy cards. They don't care.
As I clicked through, the only thing you pay for is the shipping (approx $5.50). 250 mom calling cards for $5.50, great deal!!
PBP also mentioned they give notecards and postcards away for free, but those aren't currently on offer.
Go check them out! Another thing getting me excited for Thor's arrival...