FCMA: Shaped Envelope Mail Art

For this swap you'll have one partner and you'll be creating a "shaped" envelope to mail to your partner.

You might choose to create a simple critter (like a fish or a butterfly) or a envelope shaped like a house, or even just a plain circle or triangle. Shoot, you could say the triangle is a pyramid! How about a heart? Or a teacup like the picture above? The only shapes to avoid are rectangles & squares since those are too common.