Love the natural invites (the brown) and the idea of the fabric (or other cool paper band, like the other light pink one I tagged before). Also love the RSVP card attached with ribbon in front (and that it's online RSVPing to save paper and cost).
Create gift bags from old book pages. Stamp a bird design on an old book page which has been cut 1 to 2 inches shorter than a second page. Sew or glue edges together. Secure with a brad or decorative button and small Velcro dots.