The stamps are perfect for using when card making. Why not design yourself a special "you" logo and then you can stamp it on to your business cards and stationary, very professional.
Take some foam and cut two foam squares that are the same size.
Draw out your design on to one of the pieces the foam.
Cut out your foam shape.
Glue the shape on to the other piece of foam and leave to dry.
Cut another square of foam and place in to a small dish or container and add some ink to the dish. Now you're ready to get stamping.