When I was younger we changed this a bit and used tiny cups of candy to leave on the doorsteps of our friends. We'd ring the doorbell then run and hide so we could watch them pick it up and look for us. It was a fun and innocent thing to do and made our friends feel good.
If a boy hangs a May basket on a girl's door and the girl catches him, "it's a great disgrace." If a girl is the hanger, "it disgraces the boy again not to catch her."
Happy May Day!