My friend Tim (a carpenter/artist/activist) designed this AMAZING wedding invitation for himself. The two front flaps meet in a wavy line, each one is unique, yet they are remarkably simple to make!
You can't tell from this photo, but the two front flaps meet exactly when they are fully closed. (It'd be even slightly more awesome if I'd remembered to trim the top and bottom off before taking the picture).
The execution is pretty easy (the trick is a sharp x-acto knife and a reuseable piece of shirt cardboard), although I'd never have thought of it! So I went right home and made this tute to spread elegant tryptich-style invites far and wide.
'Tis the gif to be simple, 'tis the gif to be free...
step 1: fold
step 2: glue
step 3: stick it together
step 4: one pass with the x-acto produces wavy grandeur!
You could simplify the design if you didn't want the pocket in the back for the rehearsal dinner info.
Best when made with treefree paper like Tim and his bride picked out!