Have a bonfire, collect water from your well, or a holy well and save it for use during the year, as it has special healing powers. No well? collect dew, it’s holy water too. In theory you do this by spreading a sheet on the damp grass and wringing it out, but I am not sure how well that would work. You could wash your face with it, it’s supposed to be great for the complexion! Collecting wild flowers and spreading them around the house or giving them to people you want blessed is supposed to be good luck.