If I am really on the ball, (which is not often) I like to have my kids make homemade valentines for their class.  Last year we made these cute airplanes out of gum, smarties, and life savers.  I am looking for some good ideas for this year.  Here's a few I found at Family Fun.

This one uses a skewer, pack of gum, and gummy heart.
Card stock and button candies cell phone.  A little silly, but my girls liked it.
Nathan wants to make this one.