My first one had to be Valentines! The bottom is made from one sheet of 12x12 pp, the top and inside bits part of another. I have used Making Memories "Lovestruck", it's an older pattern that I particularly like.
The box is quite sturdy, great for a special gift or decor item. Do check out Christina's video which I have linked up for you below.
Here is Christina Griffith's video showing you how to make the base, you can find the next video for the top from here.
PS I am entering this project in the challenges at The Shabby Tea Room, Really Reasonable Ribbon's Ramblings and Make It Monday.