Valentine's Day ---- conversation hearts, of course! All pastel colors with those silly sayings on them. Don't forget to add some modern ones like "PM me" and "TTYL".
Next you can do Easter -- the bunny sampler -- eggs, bunnies, carrots, lambs, etc. and for the religious folks do one with a cross, a sunrise....
Oh wait! I forgot President's Day!! You can do Lincoln and Washington faces!
OK, I may be going overboard but the idea part is fun.