At FamilyFun.com there are TONS of crafts, printable cards and ideas to for your own family. They have cute printable cards for kids that print 8 to a page, also some cute conversation hearts:
That you can print to top off cupcakes, use as table confetti, or whatever! Go HERE to see those and other selections from Family Fun.
Also, you can print free cards at AmericanGreetings.com for free. They have quarter fold, half fold and Love coupon books!
Or, you can head over to MintPrintables to print some really cute Valentines Day Gift TAGS. These are just perfect for making little Valentines Day cards for school sharing or trading. Perfect sentiments for Elementary school, or younger. Cute little tags for homemade gifts too! Aren't they cute?