Okay, so I had never thrown a baby shower. When my fav co-worker got pregnant with her 2nd, another co-worker and I decided to throw her a baby shower.
One of my responsibilities was the invitations. I didn't want to do something boring or something I had seen before (plus do you know how expensive odd-shaped envelopes are? Sheese!). So, one day I was looking goofing around on the net for something entirely different, and I came upon an origami lily. I was in love. So, I designed the invites, found some pretty ty-die looking origami paper, printed them all off, then got to folding! About 1/3 of the way through folding 28 invites, I told my husband this hadn't been my GREATEST crafting idea.... READ: it took a LONG time! (: But, everyone at work loved them! And most importantly, I felt I really gave my friend something special...my time. (:
Enough talking... On to the pictures! (sorry for the blurry camera)

What the finished flower invitations look like.

This is either all of them, or nearly all of them finished, ready to take to work. You can kind of see what the paper looked like before being folded in the background.

Once people got them, they had to take the flower apart and open it to find the invitation.
I designed the invitations with photoshop brushes that can be downloaded. I can't remember exactly where I got them, but I got the inspiration to use them from Kaffrin's wedding invitations here:
http://www.craftster.org/forum/index.php?topic=235609.0Somewhere in the Comments for the post she says what they are called/where she got them.
*** So, the one thing I'll say about doing the invitations this way.... No one wanted to destroy their flower! It was both a compliment and a frustration.... I mean, THAT was their invitation... if they didn't open it, how would they know where/when the baby shower was? The Answer? A group of the girls would get 1 sucker to open THEIR flower, then the others would just look on hers. Dirty. (: