Let's keep in mind that Valentine's Day has been hijacked by Retail, with the message: show you love someone by buying them stuff, and if you love them a lot, buy a lot of stuff, or expensive stuff. 

When it comes to children, especially, this is a dangerous unintentional connection: “Stuff equals Love” or “More stuff means more love.”

We can show love and appreciation just as well, perhaps better, by creating memories and experiences, than by accumulating things. The original Valentine's Day was to write a heartfelt message to one's beloved.