Pony invades pretty much every form of merch. If you can fit a picture on it, they probably have a Rainbow Dash version. For all of you starting a new semester after Winter Break, these are floating around right now. The actual store wasn't listed, but they exist... so I guess it's hunting time!
And if you want to get a head start on Valentines Day, a store called King Swoopers currently has MLP Valentines in stock. It looks like everything is still using the same vectors. It's a shame we don't get some new ones!