Here are some some inspirations around blogworld.
Last year we made these for E's class after being inspired by Skip to my Lou!
Another cute one with a pencil (love the candy alternative) at Skip to my Lou!
And from Family Fun Magazine, another candy alternative!
Jac o' lyn Murphy was brilliant with these rulers (I think we'll do this for M's class) and also wiffle balls!
Pittypat Paperie has a really cool s'mores Valentine. This would be great for a teacher gift!
Teach Mama (one of my favorite blogs!) has a super easy one the older kids could do all by themselves!
These handprint hearts at Roots And Wings Co would be perfect for Valentines for grandparents. They are also really cute in a simple black frame.
Hope those gave you some good inspiration!