A few nice business cards images I found:
Business Card Menger's Sponge
Image by ehisforadam
I'd been looking for something to do with my old, out of date business cards. I found it (see the link bellow) today. Fueled by NOS I built this up. Sadly, I don't think I have enough to add any more complete cubes on, just smaller ones. There isn't a single drop of glue in the whole thing.
theiff.org/images/menger/sponge cube instructions.pdf
