It's cheesy, but when I was married, my now ex put birdseed in the front yard in the outline of a heart. What wasn't covered in birds you could still see the heart. What made it sweeter was his total disregard for the money we had to pay for sod to replace this gift ;)
I had another guy get one of those yard sign services to cover my lawn in little wooden red, pink and white hearts.
When I was a single parent living paycheck to paycheck a guy bought me about $300 worth of food for Valentine's Day - again, cheesy but it worked
