bakincc - Great idea with getting the circle or heart at Hobby Lobby and reshaping it! I did that with a monstrously large shamrock cutter and it worked well, but I don't have any more cutters I can sacrifice. Unfortunately, no Hobby Lobby here, but I will look at a few other places and see what they have. Regarding the alum. flashing at Home Depot, I called the company who makes the flashing directly (three times to make sure), and each time they said it was a no-go as the materials they use in the production process (non foodsafe oils, chemicals, etc.) will not come off of the flashing even with many, many washings.
Too bad as that would have been great.