Even if your wedding will be formal, you can send a lighthearted card.
Colorful clip art helps spell out a message. Have art made into rubber stamps; print words on plain notecards.
Forget Me Knot
A string reminds guests when you're tying the knot. Scan or download a clip-art image, and print it with the details onto card stock; shape with a round-corner raft punch. Punch two small holes; thread embroidery floss through, and tie a bow.
Confetti (in a glassine envelope) lets family and friends know there's something to celebrate; attach to with double-sided tape.
A square card unfolds to spread the word. Score before folding to meet at center as shown.