DH and I went to Walmart this evening to the photo kiosk they have in the photo department there. You can print birth announcements on it! They don't have a huge selection of styles, but what they do have is pretty cute. We used one of the pictures from my siggy on the announcement. It took us about 10 minutes to make...5 minutes for it all to print...and cost only $0.28 per print! I don't have the capability to print this kind of thing at home, so this was a great, easy, inexpensive option for us!
Just thought I'd share in case anyone else on a budget wanted to make up a simple birth announcement to share with friends and family!