There are a couple of ways to do a birth announcement or birth announcement/thank you. You can go with a personalized one with a photo on the front, there are a lot of online places you can do that, or probably also at any store that prints photos. Your other option is to get a lot of small sized photos of your baby printed, and put those into regular thank you cards. When you do it the second way, you can prepare by stocking up on thank you notes before the baby is born, and even address and stamp the envelopes in those days while you anxiously await the arrival of the little one. Then, when you are ready, just get the pictures printed, stick them in and drop all the prepared envelopes into the mail. And look at all these adorable thank you note options -
There are many more where those came from!