I figured it was better to make something that the kids could use, instead of bringing chocolates. There are so many allergies and parents who don't allow sugar that a pencil gift was perfect - and they learning to write at the moment, so it killed 2 birds :)
All I had to do was print out these labels which I found here: Write on Printables
Then I cut them up and punched holes in each end. Just thread a colourful pencil through the holes and you're done.
Oh and don't forget to sign your valentines!