If you have either old business cards of your own - or old cards of other people, that you don't need any more - you can recycle them easily with a spray can or two. But mind: the result has a more artistic or subcultural style. So it is not really adaquate for a serious business - but in my case, I used it to recycle old stickers for our blog (it deals with people and organisations, that engage themselves for a better world - including the protection of our environment, so recycling is some kind of fitting).
Step 1: Step One: Cut Out Your Pattern
Depending on what your business card or sticker should communicate, cutting the pattern is a kind of laboriously task. Use some cartboard, that can deal with the dampness of the paint (my cardboard did not really stand it as you will see...).