We would be thrilled to get something like this in the mail. What you are looking at is the inside of probably the coolest invitation ever to be mailed. This LED array was enclosed in a mirrored box so all you could see were the lit LEDs. This was then inserted into a hole all the way through a catalog. You’ll have to see the pictures on their site to get the full effect. Only 40 of these were sent out, so we probably won’t get a chance to play with one ourselves. They mentioned that the first prototype was soldered by hand, just to make sure everything worked.

[via Moritz Waldemeyer]