I saw this post by simplyjstudio.blogspot.com. It's very simple to do but it took a while for me to find Rolos. You'll have to get the Rolos that are in a tube form. What you'll need : yellow color cardstock, pink color cardstock, aluminum foil, Hersey Kisses, dot glue, something to score with, edging scissors, and a cutter.
1) cut yellow cardstock paper to 4.5 x3.5. Score 1/2 an inch along the length of the paper. I prefer 1/2 inches rather than 1/4 inches. I use Martha Steward scoring board you can get 40% off at Hobby Lobby with their coupons. Cut bottom of the short end of the paper with the edging scissor.
2) cut pink cardstock paper 3.5x 1/8 inch. No need to score. Trace a circle of the Rolos to be the top of the eraser later.
3) cut aluminum foil smaller than pink cardstock.
Now wrap yellow scored paper around the roll of Rolos and glue the long side together. Do the same thing with the pink paper and foil. Use glue dot to stick the bottom of the Hersey Kisses to the Rolos. Add a heart with some ribbons and saying and you're done!