Fine art wedding invitations
Go to a local museum shop -- there's one in most towns -- or look online for an art museum.
Find a piece of art that really speaks to you. Purchase blank cards (or postcards) with a lovely art print on the front. Hand write the invitations or run the cards thru your printer.
They will be one-of-a-kind. You can also find hand-made paper at these shops. You can print a simple invitation on good paper and slip it into the hand-made card.
Easy-breezy, elegant & inexpensive!