This year I had small candy canes left over, but a couple years ago we used large ones.
All you need to do is get your hot glue gun out and glue the tops and bottoms together and voila, you have a heart shape! I then take mine and hang them around the house with some sparkly ribbon (also left over from Christmas wrapping supplies).
Here they are hanging from our dining room light.
And a few found themselves hanging from our kitchen cabinet knobs.
Happy Valentine's Day!