I was poking around on Pinterest which is a great way to destroy an entire morning, heh, but that is another point altogether. Anyway on Pinterest I came across this interesting idea from MusaBoom Blog: Stamped Business Cards. See the full graphic here.
The idea is that instead of using high-impact virgin paper, or even a percentage recycled paper, use discarded paper. Bits of boxes or old mail or whatever you have around, then just stamp it!
The idea is brilliant, but how would you react if you got a business card from someone that looked like a ripped bit of old cardboard? Would you throw it out? Curious!