We found the tutorial over at Martha Stewart's website and knew we had to make them.
This was a very inexpensive, yet time-consuming project. The girls seemed to love it though...they know their way around a box of crayolas! They got really creative with color combinations, adding a really pretty blue that I would have never thought to add to the mix. They also got creative with the shapes they cut out, making double and triple hearts. I played it safe and just cut out varying sizes of hearts.
We basically followed Martha's tutorial, except we used paper grocery bags rather than Kraft paper around the wax paper (mainly because I don't know what "kraft" paper is). I attached my hearts to baker's twine with a dab of super glue.
If you are looking for a fun project to do with your kids, this is a great one.