As much as I love paper, I love the idea of wedding invitations printed (or in this case laser engraved) on unusual materials like wood and fabric.  Oslo Press creates some truly lovely wood invitations with an understated elegance that works for either an informal outdoor wedding or a formal black-tie affair.  They also create beautiful letterpress accents, like envelopes and rsvp cards.  So unusual and so very beautiful… here are a few of my favorites:

All images via Oslo Press