A client just brought to mind an old card we made at my favorite old job, back in 2000.
The company had been completely renovating a new floor for us, and during the demo we found a crusty old photo of these guys that presumably had once worked in the building. So we Photoshopped it into a really trashy looking card as a joke, and they actually ended up using it for real & sent it out to all our clients. The way it was printed made it even better: they just ran the whole thing off as multiple prints at a camera film processing store so it even has the “Kodak Paper” logo repeated all over the back.
Glorious in its awfulness. Hark, the herald angels sing!