PRINTABLE Chalkboard Gender Reveal Little Man or Little Lady Miss Invitation. $12.00, via Etsy.
"Fingerprint guestbook. To make it, I simply Googled (of course) "baby silhouette." I choose the clip art picture that I liked best, and copy/pasted it into a Word document. I added the text underneath, and printed it on some off white paper. I added the balloon lines by using a ruler and fine-tip Sharpie. I got the ink pads for about a $1 each." I LOVE THIS!