Mini Cards, Amsterdam
Try to pick up some free minicards, you can find them in restaurants, hotels, tourist office,.....
Minicards are handsomely designed full-colour advertising cards of credit card format. Some of them just give you advertising but most of them give you free things like free coffie after a meal, 10% discount for designing your own t-shirt, 1€ discount,....
Favorite thing: You can find these mini cards in many places, mostly in hotels. Pick one of these cards, if you want to visit the places in the card, most of cards have a discount coupon on it on the enterance fees.