I have accumulated quite a few of these journaling cards that are designed for pocket pages, such as Project Life. They generally come in a 3x4 or 4x6 size. A lot of them have cute titles on one side and space for journaling on the back. I decided to use a few for my Valentine's Day cards this year. It was so easy and each card came together in five minutes or less!
I used different sizes for the card bases and started with the 3x4 cards I knew I wanted to use. For most of the cards I either matted the card with more patterned paper or ran a border strip across the middle. I also used some stamping one the "Kissing Booth" card
. I highly recommend grabbing a pack of these cards- Michael's has some called Pocket Pages and they've also started carrying some Project Life and Snap! Then you can use your stickers, paper, and embellishments to make each card unique. I try not to think too hard on each one. Sometimes the simplest cards look the best to me! Hope this helps give you some ideas on fast and easy Valentine's Day Cards.