Valentines day (sisters 8 and 11)?

Your ideas are good but what if you bought a box of the valentines (like the ones for school) and used the entire box and hid them all around the house but don't tell them. Then they'll be reminded someone loves them for a couple of days and they can still get a gift on v-day. They also might like something a little more grown up like a necklace or a fancy box of chocolates. I have kids around the same age and they like getting stuff like that!