I adore creative ways to package invitations, so that when guests receive the invitation, it's like opening a little present. Plus, doing interesting things with your packaging provides more of an opportunity to personalize. Two of my favorites:
Believe it or not, DIY via Style Me Pretty!
I love the use of the doily and the raffia. Nice textural juxtaposition.
Lovely folder and homey ribbon (this suite also has my favorite Weekend Itinerary card) via Oh So Beautiful Paper.