As my boys get older, it seems they don't want anything to do with things that say 'cute', 'sweet', 'mine' or 'yours', and especially 'love' (yuck !) .... in a few years that will probably come back (for a specific person, rather than the whole class), but for now Valentine's Day has gotten to be a bit sensitive and needs to fit into the cool category. So I ordered a bunch of rock candy, packaged it into little cello bags, printed the text onto white cover stock and attached it with red staples.
They're happy with their Valentines .... and I still think they're pretty sweet (both my boys and the treats).
For more ideas for Kids Valentine's Day cards and treats, take a look here. Have a lovely day.