I just saw this idea today and thought that it was the most clever, most easy, and cheapest Valentine to make and give EVER!
Think of all the other possibilities you could make with them... invitations, thank you's, get well soon cards, or even replace the lollipop with something else like a sparker, a crayon or pen, or maybe tie a string on that is attached to a helium balloon!
Here are several blogs with same basic idea. Check 'em out.
House on the hill blog:
and Blonde Design blog: