If you're looking for an edible Valentine's gift that isn't chocolate body paint, then how about whipping up a batch of biscuits baked with these Retro Valentine Cookie Cutters by Eddingtons?
There are umpteen retro design books out there, but I can always find space on my coffeetable or bookcase for another. Retro Home by Katherine Sorrell looks like it will make a good addition to my collection.