I just got a remark about the fact that printing ink can be poisonous. So you probably should print your own (personal) pictures on the outside, because then theres no ink on the inside. Thank you Sonja for your suggestion.
Do you want the kids to hand out a healthy snack, but do not want to give the standard box of raisins? Try these handmade boxes. Tear some pages out of a magazine or an old comic book. Cut out pieces of 12x18cm. Glue the outer ends to make a kind of 'toilet-paper roll'. Let dry for a moment. Push one end of the roll together and sew along the edges. Put in raisins and maybe a small present and push the other end together in an angle of 90 degrees of the other end. Sew.