Great ideas. We are usually full on Valentine's if it is a weekend. But are not fully scheduled yet, probably due to the uncertain weather. I like to make heart shaped scones...make a small indention in the center and place a half teaspoon of your favorite red preserves (strawberry) in the indention. Then, I use a strawberry platescape drizzle to make a graceful heart shape on the plates...plus, if you place a circle of the red drizzle and quickly draw your toothpick through it, it makes a great heart. Use a clean toothpick for each heart. These look good in a row of three, curving with the plate. These little things work for us because they don't require ingredients to be on hand just for Valentine's. Sliced strawberries also make excellent heart shapes if when you are taking out the leaves/greens at top, you make a "v" cut prior to slicing. I tuck the strawberry "hearts" into the edge of the tiny dish on the bread plate which holds the Devonshire cream for the scones.
We also have collected little heart shaped dishes which we use for the bedside chocolates on Valentine's. Plus, when we do Valentine turndown, we sprinkle the linen with silk pink and red valentine shaped rose petals, and place a book of love poetry just so. We keep the petals and love poetry books on hand and use them for anniversaries, engagements, honeymoons, too. Of course, we have Valentine specials where we include truffles, flowers, too.
Have more ideas, but this is getting long already.